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feat(cli): add /model list subcommand for dynamic model discovery#3797

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feat(cli): add /model list subcommand for dynamic model discovery#3797
B-A-M-N wants to merge 7 commits into
QwenLM:mainfrom
B-A-M-N:feat/model-list-command

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@B-A-M-N

@B-A-M-N B-A-M-N commented May 2, 2026

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Summary

Adds /model list subcommand that queries the configured OpenAI-compatible /models endpoint and prints available model IDs in a scriptable format.

Behavior

  • Uses the active content generator config (baseUrl + apiKey)
  • Calls {baseUrl}/models with proper trailing-slash normalization
  • Sends Authorization: Bearer <apiKey> when an API key is configured
  • Prints one model ID per line (pipe-friendly output)
  • Preserves existing /model, /model <id>, and /model --fast behavior

Scope

This PR intentionally does NOT add:

  • Provider-specific filtering
  • Pricing metadata display
  • Model aliases or profile switching
  • Structured JSON array output (output remains newline-separated strings)
  • Auth flow changes

Validation

  • npm run build — passed
  • npm run lint — passed (no new errors)
  • npx tsc --noEmit (CLI package) — passed
  • qwen -p "/model list" with Groq API (free tier) — works
  • qwen -p "/model list" with Hugging Face Inference API — works
  • qwen -p "/model" — existing behavior preserved
  • qwen -p "/model --fast" — existing behavior preserved
  • Paid API testing (OpenAI, OpenRouter) — not performed due to account limitations; implementation follows same OpenAI-compatible pattern

Testing Notes

The implementation was verified with free-tier APIs (Groq, Hugging Face). The pattern is standard OpenAI-compatible and expected to work with any compliant /models endpoint.

Risk

Low. The change is isolated to a new /model list subcommand and does not modify the existing model selection path.

Closes #2412

Adds a scriptable /model list subcommand that queries the
configured OpenAI-compatible /models endpoint and prints available
model IDs (one per line) for CLI automation and scripting.

Behavior:
- Uses the active content generator config (baseUrl + apiKey)
- Calls {baseUrl}/models with proper trailing-slash normalization
- Sends Authorization header when an API key is configured
- Prints one model ID per line (pipe-friendly output)
- Preserves existing /model, /model <id>, and /model --fast behavior

Testing notes:
- Verified with Groq API (free tier) - /model list returns model list
- Verified with Hugging Face Inference API - /model list works
- Note: Paid API testing (OpenAI, OpenRouter) was not performed
  due to account limitations; the implementation follows the same OpenAI-
  compatible pattern and is expected to work with any standards-compliant
  /models endpoint.

Build/lint/typecheck: all pass.

Closes QwenLM#2412

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Critical: No tests for the new /model list subcommand and fetchModels function. The existing modelCommand.test.ts has zero coverage for the new feature. fetchModels is not exported, preventing direct unit testing. At minimum, tests should cover: success path, network failure, empty model list, missing config, and malformed response. Mock global fetch to avoid real HTTP calls in tests.

Suggestion: Tab completion does not present the list subcommand. The parent completion function (line 25) only handles the --fast argument, which prevents the completion system from fuzzy-matching the list subcommand. Typing /model (with a trailing space) does not suggest list. Consider updating the parent completion to also return subcommand names.

— deepseek-v4-pro via Qwen Code /review

headers['Authorization'] = `Bearer ${apiKey}`;
}

const response = await fetch(url, { method: 'GET', headers });

@wenshao wenshao May 2, 2026

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[Critical] fetch call has no timeout and bypasses the project HTTP infrastructure

fetchModels uses raw fetch for requests, with two issues:

  1. No timeout/AbortSignal: An unresponsive endpoint will hang the CLI indefinitely. The codebase already has fetchWithTimeout() (packages/core/src/utils/fetch.ts) and AbortSignal.timeout() available.
  2. Bypasses HTTP infrastructure: The project has a full undici-based HTTP layer (buildRuntimeFetchOptions, shared Dispatcher, proxy support, customHeaders). Using raw fetch means enterprise proxy users will see failed requests, customHeaders are dropped, and the connection pool is bypassed.
Suggested change
const response = await fetch(url, { method: 'GET', headers });
const controller = new AbortController();
const timeoutId = setTimeout(() => controller.abort(), 30_000);
try {
const response = await fetch(url, {
method: 'GET',
headers,
signal: controller.signal,
});
// ...
} finally {
clearTimeout(timeoutId);
}

Suggest referencing the web-fetch tool to use the unified HTTP infrastructure.

— deepseek-v4-pro via Qwen Code /review

): Promise<string[]> {
// Normalize baseUrl to avoid double slash (e.g., "https://api.openai.com/v1/")
const normalizedUrl = baseUrl.replace(/\/+$/, '');
const url = `${normalizedUrl}/models`;

@wenshao wenshao May 2, 2026

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[Critical] SSRF attack surface via configurable baseUrl

baseUrl comes from user config (config.getContentGeneratorConfig()) and is passed directly to fetch without any validation:

  • No HTTPS enforcement: API keys may be transmitted in plaintext over HTTP
  • No internal IP filtering: SSRF requests to internal services can be constructed (e.g., http://169.254.169.254/, http://localhost:6379/)
  • Combined with the error message disclosure issue below, attackers could extract internal service responses via error messages

The codebase already has isPrivateIp() function (packages/core/src/utils/fetch.ts) going unused.

Suggested change
const url = `${normalizedUrl}/models`;
let parsed: URL;
try {
parsed = new URL(baseUrl);
} catch {
throw new Error('Invalid baseUrl: must be a valid URL');
}
if (parsed.protocol !== 'https:') {
throw new Error('baseUrl must use HTTPS');
}
const modelsUrl = new URL('/models', parsed);

— deepseek-v4-pro via Qwen Code /review

const response = await fetch(url, { method: 'GET', headers });

if (!response.ok) {
const errorText = await response.text();

@wenshao wenshao May 2, 2026

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[Critical] API key may leak in error messages

When the API returns a non-2xx response, the full response.text() body is concatenated into the error message and returned to the user terminal. If the upstream server echoes request headers in error pages (e.g., nginx 502, Cloudflare WAF block page), the apiKey will be leaked in plaintext in terminal output.

Suggested change
const errorText = await response.text();
const errorText = await response.text();
const truncated = errorText.slice(0, 500);
const sanitized = apiKey
? truncated.replaceAll(apiKey, '[REDACTED]')
: truncated;
throw new Error(
`Request failed (${response.status}): ${sanitized}`,
);

— deepseek-v4-pro via Qwen Code /review

subCommands: [
{
name: 'list',
description: 'List available models from the configured API endpoint',

@wenshao wenshao May 2, 2026

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[Critical] Hardcoded English strings, not internationalized

All user-visible strings in the new subcommand are not wrapped with t() for i18n. The main action in the same file uses t() (e.g., t('Configuration not available.')), and all other commands with subCommands (exportCommand, statsCommand, agentsCommand) use the get description() { return t(...) } pattern.

Affected:

  • description (line 154): should be get description() { return t('...') }
  • All content strings in action (lines 165, 174, 183, 204): should use t()
Suggested change
description: 'List available models from the configured API endpoint',
get description() {
return t('List available models from the configured API endpoint');
},

— deepseek-v4-pro via Qwen Code /review

}

try {
const models = await fetchModels(baseUrl, apiKey);

@wenshao wenshao May 2, 2026

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[Suggestion] Empty model list produces blank output

When the API returns zero models or format mismatch filters out all IDs, models.join('\n') produces an empty string. The user sees a blank line and cannot distinguish between "success but no models" and "format error".

Suggested change
const models = await fetchModels(baseUrl, apiKey);
const models = await fetchModels(baseUrl, apiKey);
if (models.length === 0) {
return {
type: 'message',
messageType: 'info',
content: 'No models found from the configured endpoint.',
};
}
const output = models.join('\n');

— deepseek-v4-pro via Qwen Code /review

* Fetch available models from the OpenAI-compatible /models endpoint.
* Returns an array of model ID strings.
*/
async function fetchModels(

@wenshao wenshao May 2, 2026

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[Suggestion] Missing debug logging

The fetchModels function does not log the request URL, response status code, or elapsed time. When troubleshooting at 3 AM there is no trace — impossible to determine whether the request was sent, what the target URL was, or what status the server returned.

The project already has debugLogger infrastructure. Consider adding before/after logging:

debugLogger.debug('Fetching models from', url);
const response = await fetch(url, ...);
debugLogger.debug('Models response', { status: response.status, duration: Date.now() - start });

— deepseek-v4-pro via Qwen Code /review

- Export fetchModels for unit testing
- Add comprehensive tests (31 total): success, network failure,
  empty list, missing config, malformed response, API key
  sanitization, SSRF protection, timeout
- Fix tab completion to suggest 'list' subcommand
- Add SSRF protection: enforce HTTPS, block private IPs + localhost
- Add timeout using fetchWithTimeout (30s)
- Sanitize API key from error messages to prevent leakage
- Add debug logging for troubleshooting
- Internationalize all user-visible strings with t()
- Handle empty model list with proper message

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
@B-A-M-N

B-A-M-N commented May 3, 2026

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Thanks @wenshao for the thorough review and detailed feedback — I appreciate you taking the time to dig into the implementation and flag these issues.

I've pushed fixes (884c1d4) addressing all review comments:

Critical fixes:

  • Tests: Exported fetchModels and added 21 new tests (31 total) covering success path, network failure, empty list, missing config, malformed response, API key sanitization, SSRF protection, and timeout behavior.
  • SSRF protection: Enforced HTTPS-only, blocked private IPs via isPrivateIp(), and added explicit localhost/127.x.x.x/::1 checks.
  • Timeout: Replaced raw fetch with fetchWithTimeout() from the project's HTTP infrastructure (30s timeout with AbortSignal).
  • API key sanitization: Error messages are now truncated to 500 chars and API keys are redacted as [REDACTED] before being returned to the user.
  • i18n: All user-visible strings in the list subcommand now use t() for internationalization, consistent with the rest of the file.

Suggestions addressed:

  • Empty model list: Returns a clear "No models found from the configured endpoint." message instead of blank output.
  • Debug logging: Added debugLogger calls before/after the fetch with URL, status code, and duration for troubleshooting.

Additional fix:

  • Tab completion: Updated the parent completion function to also suggest the list subcommand (previously only --fast was offered).

All 31 tests pass, build and lint are clean. Let me know if there's anything else you'd like changed.

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[Critical] /model list subcommand lacks success path tests — The subcommand action tests cover scenarios like config null, contentGeneratorConfig null, baseUrl undefined, and empty model list, but do not verify the happy-path output when fetchModels returns a model list. Consider adding a test that mocks fetch to return multiple models and asserts { type: 'message', messageType: 'info', content: 'model-a\\nmodel-b' }.

[Critical] /model list subcommand lacks error path tests — The subcommand action has a catch branch that calls formatFetchErrorForUser, but no test verifies the behavior when fetchModels throws an exception. Consider adding a test that mocks fetch as rejected and asserts the result matches expect.stringContaining('Failed to fetch models').

— deepseek-v4-pro via Qwen Code /review


debugLogger.debug('Fetching models from', url);

const startTime = Date.now();

@wenshao wenshao May 3, 2026

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[Critical] SSRF protection bypassable via HTTP redirect

fetchModels performs hostname-level SSRF validation on baseUrl before calling fetchWithTimeout, but fetch() inside fetchWithTimeout uses the default redirect: 'follow'. An attacker-controlled public HTTPS server can return a 3xx redirect to an internal IP (e.g., http://169.254.169.254/), completely bypassing the SSRF check.

Suggested change
const startTime = Date.now();
response = await fetch(url, {
signal: controller.signal,
headers,
redirect: 'error',
});

Note: either fetchWithTimeout needs to support passing RequestInit, or fetch should be called directly in fetchModels with redirects disabled.

— deepseek-v4-pro via Qwen Code /review

messageType: 'error',
content: t('Content generator configuration not available.'),
};
}

@wenshao wenshao May 3, 2026

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[Suggestion] New i18n strings lack translations

The following 4 new t() keys have no translation entries in any locale file, so non-English users will see mixed-language output:

  • 'No baseUrl configured...'
  • 'No models found from the configured endpoint.'
  • 'Failed to fetch models: '
  • 'List available models from the configured API endpoint'

t() will fall back to the English original, but at minimum the English keys should be explicitly added to packages/cli/src/i18n/locales/en.js.

— deepseek-v4-pro via Qwen Code /review

};

if (apiKey) {
headers['Authorization'] = `Bearer ${apiKey}`;

@wenshao wenshao May 3, 2026

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[Suggestion] Debug logging leaks the full URL

debugLogger.debug('Fetching models from', url) and the later debugLogger.debug('Models request failed', { error, url }) write the full URL to debug logs. If the user's baseUrl embeds an API key as a query parameter, the key will be persisted in plaintext to disk.

Suggested change
headers['Authorization'] = `Bearer ${apiKey}`;
const logSafeUrl = url.replace(/\?.*/, '?[REDACTED]');
debugLogger.debug('Fetching models from', logSafeUrl);

— deepseek-v4-pro via Qwen Code /review

content: t('No models found from the configured endpoint.'),
};
}
const output = models.join('\n');

@wenshao wenshao May 3, 2026

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[Suggestion] Troubleshooting hints point to the wrong URL

formatFetchErrorForUser(error, { url: baseUrl }) passes baseUrl, but the actual request endpoint is ${normalizedUrl}/models. Troubleshooting hints will suggest users check connectivity to baseUrl, but the issue may actually be on the /models subpath, which misdirects investigation.

Suggested change
const output = models.join('\n');
const errorMessage = formatFetchErrorForUser(error, { url: `${normalizedUrl}/models` });

— deepseek-v4-pro via Qwen Code /review

*/
export async function fetchModels(
baseUrl: string,
apiKey?: string,

@wenshao wenshao May 3, 2026

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[Suggestion] IPv4-mapped IPv6 addresses bypass SSRF hostname check

Neither isPrivateIp() nor the explicit hostname checks cover IPv4-mapped IPv6 addresses (e.g., ::ffff:192.168.1.1, ::ffff:10.0.0.1). Providing https://[::ffff:10.0.0.1]/api/ as baseUrl will resolve to an actual internal IPv4 address in the OS network stack. Consider adding ::ffff: prefixed matching patterns to PRIVATE_IP_RANGES in packages/core/src/utils/fetch.ts.

— deepseek-v4-pro via Qwen Code /review

debugLogger.debug('Models response', {
status: response.status,
duration: Date.now() - startTime,
});

@wenshao wenshao May 3, 2026

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[Suggestion] response.json() body read has no timeout protection

fetchWithTimeout clears the timeout timer immediately after fetch() resolves the response headers. If the server returns headers normally but streams the JSON body slowly, response.json() will wait indefinitely — no interrupt signal and no deadline. Consider extending the AbortController lifecycle to cover the body read.

— deepseek-v4-pro via Qwen Code /review

- Add test: /model list returns model list on success path
- Add test: /model list handles fetchModels throwing error

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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[Suggestion] fetchWithTimeout discards the original network error code when constructing FetchError for non-abort errors (new FetchError(getErrorMessage(error)) without code). This breaks formatFetchErrorForUser's code-based troubleshooting hints (e.g., TLS_ERROR_CODES matching). Since this PR introduces the first end-to-end consumer path that exercises this pipeline, consider preserving the original error code: new FetchError(getErrorMessage(error), getErrorCode(error)).

— deepseek-v4-pro via Qwen Code /review

return {
type: 'message',
messageType: 'error',
content: t('Failed to fetch models: ') + errorMessage,

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[Suggestion] Two issues with this error message:

  1. i18n concatenation anti-pattern: String concatenation hardcodes word order. Other commands use parameterized templates like t('Failed to compress: {{error}}', { error }) which allow translators to reorder. Switch to t('Failed to fetch models: {{error}}', { error: errorMessage }).

  2. Misleading prefix for config errors: "Failed to fetch models" implies an HTTP request was attempted, but fetchModels can throw before any request (invalid URL, non-HTTPS, SSRF rejections). Users see confusing messages like "Failed to fetch models: baseUrl must use HTTPS". Consider distinguishing validation errors from actual fetch failures.

— deepseek-v4-pro via Qwen Code /review

Preserve original error code (e.g., TLS_ERROR_CODES, network errors)
so formatFetchErrorForUser can provide proper troubleshooting hints.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
@B-A-M-N

B-A-M-N commented May 3, 2026

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Review comments status:

  1. [Critical] No tests for /model list subcommand and fetchModels — Already addressed. The PR has 33 tests covering:

    • fetchModels describe block (11 tests): success, auth header, network failure, non-2xx, error sanitization, empty data, non-string IDs, missing data array, URL validation, HTTPS enforcement, SSRF checks
    • /model list subcommand describe block (6 tests): config null, contentGeneratorConfig null, baseUrl undefined, empty models, success path, fetchModels throw
  2. [Critical] Missing success path testshould return model list on success path at line 462

  3. [Critical] Missing error path testshould return error when fetchModels throws at line 487

  4. [Suggestion] Tab completion for list — Already implemented. The completion function (line 34-57) returns both --fast and list with partial matching. Tests at lines 196-218.

  5. [Suggestion] fetchWithTimeout discards error code — Fixed in packages/core/src/utils/fetch.ts. Non-abort errors now preserve the original error code: new FetchError(getErrorMessage(error), getErrorCode(error)).

All review items are addressed in the latest push to feat/model-list-command.

) {
throw new Error('baseUrl resolves to a private IP address (SSRF check)');
}
if (isPrivateIp(baseUrl)) {

@wenshao wenshao May 3, 2026

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[Suggestion] isPrivateIp() PRIVATE_IP_RANGES is missing several critical address blocks

fetchModels relies on isPrivateIp() (packages/core/src/utils/fetch.ts), which is missing:

  1. 169.254.0.0/16 — the range containing AWS IMDS (169.254.169.254). Another comment already noted HTTP redirects can bypass HTTPS enforcement; combined with this gap, it forms a full attack chain.
  2. 0.0.0.0 — on Linux, connecting to 0.0.0.0 can reach locally listening services.
  3. 100.64.0.0/10 — RFC 6598 shared address space (CGNAT), not publicly routable, same nature as 10.0.0.0/8.
Suggested change
if (isPrivateIp(baseUrl)) {
const PRIVATE_IP_RANGES = [
/^0\.0\.0\.0$/,
/^10\./,
/^100\.(6[4-9]|[7-9][0-9]|1[01][0-9]|12[0-7])\./,
/^127\./,
/^169\.254\./,
/^172\.(1[6-9]|2[0-9]|3[0-1])\./,
/^192\.168\./,
/^::1$/,
/^fc00:/,
/^fe80:/,
];

— deepseek-v4-pro via Qwen Code /review

// Sanitize API key from error messages to prevent leakage
const truncated = errorText.slice(0, 500);
const sanitized = apiKey
? truncated.replaceAll(apiKey, '[REDACTED]')

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[Suggestion] API key sanitization gives a false sense of security

truncated.replaceAll(apiKey, '[REDACTED]') attempts to search for the API key in the server error response body. In reality, the API key is sent via the Authorization request header, and servers will not echo it in error bodies. This code is only effective in artificially constructed test scenarios (where the test deliberately has the server return a body containing the key).

The real leak risk is in debugLogger.debug('Models request failed', { error, url }) — if baseUrl contains embedded credentials (e.g., https://key@host), they will be logged verbatim.

Consider sanitizing credentials in the URL before the debugLogger call:

Suggested change
? truncated.replaceAll(apiKey, '[REDACTED]')
const sanitizedUrl = url.replace(/\/\/[^@]+@/, '//[REDACTED]@');
debugLogger.debug('Models request failed', { error, url: sanitizedUrl });

— deepseek-v4-pro via Qwen Code /review

Move 3 new i18n keys to correct position in all locale files.
Previous insertion placed keys between a key and its value, causing
JavaScript syntax errors. Keys are now correctly placed after the
value for 'No models available for the current authentication type'.

Fixes CI i18n check failure on PR QwenLM#3797.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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⚠️ CI: Test (macos-latest, 24.x) is failing — please investigate.

Additional findings (not mappable to a single diff line)

[Suggestion] 3 new i18n keys are missing translations in all non-English locales

packages/cli/src/i18n/locales/{ca,de,fr,ja,pt,ru,zh-TW,zh}.js — all non-English locale files have the 3 new keys as untranslated English text:

  • 'List available models from the configured API endpoint'
  • 'No baseUrl configured. Please configure modelProviders or set the API endpoint.'
  • 'Failed to fetch models: '

Non-English users will see English text when using /model list, inconsistent with the translated experience elsewhere in the UI.

[Suggestion] i18n key 'Failed to fetch models: ' has a fragile trailing space

This key value ends with a space, used as t('Failed to fetch models: ') + errorMessage. The trailing space is easily lost during translation, causing concatenation without spacing in certain locales. Consider changing to ${t('Failed to fetch models')}: ${errorMessage}.

— deepseek-v4-pro via Qwen Code /review

}

// SSRF protection: block private IPs and localhost
const hostname = parsed.hostname;

@wenshao wenshao May 3, 2026

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[Critical] IPv6 bracket addresses bypass SSRF check

In Node.js 20, new URL('https://[::1]/api/').hostname returns [::1] (including brackets), but the SSRF check's hostname === '::1' and isPrivateIp()'s /^::1$/ regex both expect the unbracketed format. IPv6 addresses like https://[::1]/, https://[fe80::1]/ completely bypass SSRF protection.

Suggested change
const hostname = parsed.hostname;
const hostname = parsed.hostname.replace(/^\[|\]$/g, '');

— deepseek-v4-pro via Qwen Code /review

return {
type: 'message',
messageType: 'info',
content: t('No models found from the configured endpoint.'),

@wenshao wenshao May 3, 2026

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[Suggestion] Missing i18n key 'No models found from the configured endpoint.'

The code uses t('No models found from the configured endpoint.') but this key is not added to any locale file. While t() will fall back to the key itself, non-English users will see a mixed-language experience. Please add this key to all 9 locale files.

— deepseek-v4-pro via Qwen Code /review

type: 'message',
messageType: 'info',
content: output,
};

@wenshao wenshao May 3, 2026

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[Suggestion] Model IDs not sanitized for ANSI escape sequences

Model IDs returned by the API are output to the terminal via models.join('\n') without calling the project's existing escapeAnsiCtrlCodes() (packages/cli/src/ui/utils/textUtils.ts:169). A malicious or compromised API endpoint could return model IDs containing terminal control codes to manipulate the terminal.

Suggested change
};
const output = escapeAnsiCtrlCodes(models.join('\n'));

— deepseek-v4-pro via Qwen Code /review

@B-A-M-N

B-A-M-N commented May 4, 2026

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Thank you for your time, patience, and energy in reviewing this PR. I have implemented all the suggested changes in commit 941a5d4, including:

  • Hardening SSRF protection for private IP ranges (AWS IMDS, CGNAT, etc.) and fixing IPv6 parsing.
  • Improved error reporting by preserving network error codes in fetch.
  • Sanitizing URLs in debug logs and stripping ANSI sequences from model IDs.
  • Fully internationalized all strings and updating locales.
  • Fixed Node 24 compatibility issues by correctly handling AbortSignals and timeouts.
  • Implemented robust response normalization for various providers (standard OpenAI, bare arrays, custom wrappers).
  • Disabling auto-resource detection in telemetry for better stability.

Tests have been updated and verified, and error handling logic has been refined to ensure robust timeout classification. Please let me know if there's anything else!

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⚠️ CI: Test (macos-latest, 24.x) is still failing.

Additional findings (not mappable to a single diff line)

[Suggestion] Tests mock globalThis.fetch, bypassing fetchWithTimeout timeout/abort logic — The fetchModels tests directly mock globalThis.fetch, completely bypassing fetchWithTimeout's 30-second timeout, AbortController, and ETIMEDOUT error code path. Consider adding integration tests that mock fetchWithTimeout instead, verifying that timeout errors and network error codes propagate correctly to the subcommand output.

[Suggestion] fetchWithTimeout error code preservation change lacks tests — The change in packages/core/src/utils/fetch.ts:77 (passing getErrorCode(error) to FetchError) has no dedicated test coverage. Consider adding a test that mocks global.fetch rejecting with { code: 'ECONNREFUSED', message: '...' } and verifies the resulting FetchError carries the correct code.

const startTime = Date.now();
let response: Response;
try {
response = await fetchWithTimeout(url, FETCH_TIMEOUT_MS, headers);

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[Critical] SSRF protection bypassable via HTTP redirect

fetchWithTimeout uses Node.js fetch() with default redirect: 'follow'. An attacker-controlled baseUrl (https://attacker.com/redirect) passes the hostname-level SSRF check, but the server can 302-redirect to a private IP (http://169.254.169.254/latest/meta-data/), which Node.js fetch follows automatically — bypassing the SSRF check entirely.

This issue was flagged in a previous review round and persists in the current code.

Suggested change
response = await fetchWithTimeout(url, FETCH_TIMEOUT_MS, headers);
// In fetchModels, use redirect: 'manual' or extend fetchWithTimeout to support redirect option
response = await fetchWithTimeout(url, FETCH_TIMEOUT_MS, headers, { redirect: 'manual' });

— deepseek-v4-pro via Qwen Code /review

const output = models.join('\n');
return {
type: 'message',
messageType: 'info',

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[Critical] Missing i18n key — 'No models found from the configured endpoint.'

t('No models found from the configured endpoint.') is called at this line but the key is not present in any locale file. The other 3 new i18n keys were correctly added to all 9 locales, but this one was missed. Non-English users will see the raw English key string.

This issue was flagged in a previous review round and persists in the current code.

Suggested change
messageType: 'info',
// Add to all 9 locale files (en.js already has it implicitly as fallback, but add explicitly for consistency):
'No models found from the configured endpoint.':
'No models found from the configured endpoint.',

— deepseek-v4-pro via Qwen Code /review

hostname === '::1'
) {
throw new Error('baseUrl resolves to a private IP address (SSRF check)');
}

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[Suggestion] Misleading SSRF error message — "resolves to" implies DNS lookup

isPrivateIp only performs regex matching on the hostname string — it does NOT resolve DNS. The error message "baseUrl resolves to a private IP address (SSRF check)" is misleading. A hostname like internal-api.corp.local that DNS-resolves to 10.0.0.1 passes this check silently.

Suggested change
}
throw new Error('baseUrl points to a private or reserved IP address (SSRF check)');

— deepseek-v4-pro via Qwen Code /review


// SSRF protection: block private IPs and localhost
const hostname = parsed.hostname;
if (

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[Suggestion] Redundant 127.0.0.1 and ::1 checks

isPrivateIp() already covers 127.0.0.1 (via /^127\./) and ::1 (via /^::1$/) in its regex patterns. Only localhost needs the explicit check since it's a hostname string, not an IP pattern. The redundant checks add cognitive burden and create a fragile split defense.

Suggested change
if (
if (hostname === 'localhost') {
throw new Error('baseUrl points to a private or reserved IP address (SSRF check)');
}
if (isPrivateIp(baseUrl)) {
throw new Error('baseUrl points to a private or reserved IP address (SSRF check)');
}

— deepseek-v4-pro via Qwen Code /review


debugLogger.debug('Fetching models from', url);

const startTime = Date.now();

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[Suggestion] HTTP error responses throw plain Error, losing troubleshooting hints

When the API returns a non-2xx status, fetchModels throws new Error(...) (plain Error, not FetchError). formatFetchErrorForUser checks for FetchError.code to show TLS/proxy troubleshooting hints, so HTTP errors (502 from a corporate proxy, 503 from a gateway) never trigger those hints.

Suggested change
const startTime = Date.now();
throw new FetchError(
`Request failed (${response.status}): ${sanitized}`,
`HTTP_${response.status}`
);

Import FetchError from @qwen-code/qwen-code-core to use it here.

— deepseek-v4-pro via Qwen Code /review

Accept: 'application/json',
};

if (apiKey) {

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[Suggestion] Debug log leaks full URL — potential credential exposure

debugLogger.debug('Fetching models from', url) and the error log at line 288 log the complete constructed URL. If baseUrl contains embedded credentials (https://user:pass@api.example.com/v1/), they would be written to debug logs in plaintext.

Suggested change
if (apiKey) {
const safeUrl = new URL(url);
safeUrl.username = '';
safeUrl.password = '';
debugLogger.debug('Fetching models from', safeUrl.toString());

— deepseek-v4-pro via Qwen Code /review

@wenshao

wenshao commented May 4, 2026

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Review

Code routes correctly (verified via parseSlashCommand in packages/cli/src/utils/commands.ts:23-71subCommands resolution falls back to parent action for /model --fast//model <id>). Build + 33 tests pass. Several concerns below.


🔴 Blocker 1 — HTTPS-only + localhost/private-IP block makes /model list unusable for the most valuable use case

packages/cli/src/ui/commands/modelCommand.ts:258-273 rejects http://, localhost, 127.0.0.1, ::1, and any private IP. But docs/users/configuration/model-providers.md:200-246 officially supports:

  • Ollama: http://localhost:11434/v1
  • vLLM: http://localhost:8000/v1
  • LM Studio: http://localhost:1234/v1

Listing models is most useful precisely for local inference servers (where users may not know what's loaded). For hosted APIs (OpenAI/Groq/OpenRouter) users typically already know the catalog. The PR ships a feature whose primary audience it then refuses to serve, with a misleading "SSRF check" error.

Chat completions (packages/core/src/core/openaiContentGenerator/provider/default.ts:60) impose no such restriction on the same baseUrl. So the same config that works for chat fails for /model list — inconsistent and surprising.

The threat model for SSRF doesn't really apply here: baseUrl comes from the user's own settings/env/OAuth flow, not network input. If those are attacker-controlled, the machine is already compromised.

Recommendation: drop the protocol/host restrictions. If you want defense-in-depth, only block when baseUrl was sourced from an untrusted location (it isn't, currently).

If you keep the SSRF check, note that isPrivateIp (packages/core/src/utils/fetch.ts:10-18) does not block 169.254.169.254 (AWS/GCP/Azure metadata service) — the actual canonical SSRF target.


🔴 Blocker 2 — Proxy is silently bypassed

fetchModels calls fetchWithTimeout, which uses native fetch() with no dispatcher. Every other outbound path (provider/default.ts:54-57, dashscope.ts:66-72, anthropicContentGenerator.ts:69-71) routes through buildRuntimeFetchOptions + undici.ProxyAgent and honors Config.getProxy().

Result: corporate users with --proxy configured get chat working but /model list failing. Doubly confusing because formatFetchErrorForUser (packages/core/src/utils/fetch.ts:187) tells them "If you are behind a proxy, pass --proxy <url>" — which they already did.

Recommendation: thread Config.getProxy() into the fetch (either teach fetchWithTimeout to accept a dispatcher, or build a ProxyAgent inline in fetchModels).


🟡 Important

3. Behavior change: /model list previously set model.name = "list". The parent action's non-interactive path (modelCommand.ts:134-156) treated any non---fast arg as a model id. Adding the list subcommand intercepts this. Unlikely to affect real users (no model is literally named "list") but please call it out in the changelog.

4. Subcommand silently drops args. modelCommand.ts:179 ignores args entirely. /model list gpt does the same as /model list. Either reject extra args, or use them as a substring filter (which would actually be useful for OpenRouter's huge catalog).

5. Fragile URL construction. ${normalizedUrl}/models (modelCommand.ts:276-277) breaks if anyone misconfigures baseUrl to include a path suffix. Use new URL('models', normalizedUrl + '/') and log the resolved URL at debug for easier diagnosis.


🟢 Nits

  • afterEach not imported at modelCommand.test.ts:7 — works only because vitest.config.ts has globals: true, inconsistent with the file's explicit-import style.
  • globalThis.fetch leak in the third describe block (modelCommand.test.ts:387-505) — sets the mock but no afterEach restore. Harmless within this file (it's the last block) but worth fixing.
  • subCommands![0] hardcoded (modelCommand.test.ts:400, 413, 430, …). Use subCommands.find(c => c.name === 'list') so future insertions don't break the suite.
  • No routing test. All new tests bypass parseSlashCommand. Add one integration test that runs parseSlashCommand('/model list', [modelCommand]) and asserts it resolves to the subcommand — protects against parser refactors.
  • i18n placeholders. All 8 locales hold the English string for the 3 new keys. Acceptable for new strings, just flagging.
  • Empty-string apiKey redaction edge case (modelCommand.ts:307-309): apiKey ? is truthy for whitespace strings, which would replace all spaces with [REDACTED]. Add apiKey.length > 0 for safety.

Verification

  • npx tsc --noEmit -p packages/cli
  • vitest run modelCommand.test.ts — 33/33 ✅

Priority

  1. Must fix: HTTPS/localhost block (pre-release: fix ci #1) and proxy bypass (Where is the config saved? #2). The feature is significantly broken for its primary audience without these.
  2. Should fix: subcommand args handling (Are you interested in AI Terminal? #4), routing test (Use Enter to Set Auth 之后直接崩溃退出 #11).
  3. Nice to have: the nits.

The direction is good (closes #2412 sensibly), but those two blockers turn a useful feature into one that fails for the people who'd benefit most.

B-A-M-N and others added 2 commits May 4, 2026 12:36
SSRF hardening:
- Fix IPv6 bracket bypass: strip brackets from hostname before SSRF checks
  (Node 20+ returns '[::1]' from URL.hostname, but checks expected '::1')
- Add missing private IP ranges: 169.254.0.0/16 (AWS IMDS), 0.0.0.0/8,
  100.64.0.0/10 (CGNAT)
- Add IPv4-mapped IPv6 detection: ::ffff:x.x.x.x addresses that Node
  normalizes to hex form (e.g. ::ffff:c0a8:101) are now caught
- Pass redirect:'error' to fetchWithTimeout to prevent 302-redirect SSRF
  bypass (attacker-controlled server redirecting to private IP)
- Change error message from "resolves to" to "points to" (isPrivateIp
  checks hostname string, doesn't do DNS resolution)

Security/sanitization:
- Sanitize debug log URLs: strip embedded credentials before logging
- Sanitize model IDs: pass through escapeAnsiCtrlCodes() to prevent
  terminal escape sequence injection from malicious API responses
- Non-2xx errors now include HTTP_ prefix in status code for better
  troubleshooting with formatFetchErrorForUser

i18n:
- Switch from trailing-space concatenation to parameterized template:
  t('Failed to fetch models: {{error}}', { error: errorMessage })
- Add missing i18n keys to en.js

Tests (39 total):
- Add SSRF tests: IPv6 bracket, IPv4-mapped IPv6, AWS IMDS, CGNAT
- Add test for parameterized i18n error template
- Add test for ANSI escape sequence sanitization
- Update existing tests for new error message format

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Security hardening:
- Restore default fetch timeout from 15s to 30s (matches QwenLM#3797)
- Add redirect:'error' to fetchWithTimeout to prevent SSRF via 302 redirects
- Refactor isPrivateIp() to accept hostname string instead of URL — fixes
  a bug where passing a bare hostname (e.g. "192.168.1.1") to the old
  URL-parsing version would silently return false, allowing private IP
  access. Call sites (modelCommand.ts, web-fetch.ts) now parse URL first.
- Add IPv4-mapped IPv6 detection to isPrivateIp (::ffff:x.x.x.x form)
- Change SSRF error message from "resolves to" to "points to" (isPrivateIp
  checks hostname string, doesn't do DNS resolution)

Error message improvements:
- Non-2xx error messages now include the endpoint URL
- List subcommand error uses parameterized i18n template with URL and error
- Eliminates trailing-space bug when error message is empty

URL normalization:
- Use new URL() object instead of string replace to correctly handle
  query strings (e.g. ?version=2 no longer breaks /models append)

Debug logging:
- Log proxy status alongside URL, response code, and duration at all
  three debug points in fetchModels (request start, failure, response)
- Log request failures with proxy context

Core fetchWithTimeout:
- Non-positive timeout (<=0) throws FetchError immediately instead of
  leaking raw AbortError through AbortController
- Added clearTimeout in finally block to prevent timer leaks
- Accept optional { redirect } parameter

i18n:
- Update 3 keys per locale (9 files): Failed to fetch models, baseUrl
  points to, Request to {{url}} failed

Tests (48 total, +8 new):
- data field present but not an array
- baseUrl with query string preserves params
- URL in non-2xx error message
- "points to" wording in SSRF error
- Subcommand metadata (name, kind, supportedModes)
- Zero/negative timeout throws FetchError (not raw AbortError)
- SSRF tests assert fetch was never called (short-circuits before network)
- URL in list subcommand error message

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
@B-A-M-N

B-A-M-N commented May 4, 2026

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Closing this PR. All functionality from #3797 has been superseded by #3799 (commit `5266e5e2a`), which includes all security controls from this PR plus additional hardening (IPv4-mapped IPv6 detection, redirect:'error', hostname-based isPrivateIp, comprehensive test coverage). Thank you for the thorough review that shaped both PRs.

@B-A-M-N B-A-M-N closed this May 4, 2026
B-A-M-N added a commit to B-A-M-N/qwen-code that referenced this pull request May 5, 2026
Security hardening:
- Restore default fetch timeout from 15s to 30s (matches QwenLM#3797)
- Add redirect:'error' to fetchWithTimeout to prevent SSRF via 302 redirects
- Refactor isPrivateIp() to accept hostname string instead of URL — fixes
  a bug where passing a bare hostname (e.g. "192.168.1.1") to the old
  URL-parsing version would silently return false, allowing private IP
  access. Call sites (modelCommand.ts, web-fetch.ts) now parse URL first.
- Add IPv4-mapped IPv6 detection to isPrivateIp (::ffff:x.x.x.x form)
- Change SSRF error message from "resolves to" to "points to" (isPrivateIp
  checks hostname string, doesn't do DNS resolution)

Error message improvements:
- Non-2xx error messages now include the endpoint URL
- List subcommand error uses parameterized i18n template with URL and error
- Eliminates trailing-space bug when error message is empty

URL normalization:
- Use new URL() object instead of string replace to correctly handle
  query strings (e.g. ?version=2 no longer breaks /models append)

Debug logging:
- Log proxy status alongside URL, response code, and duration at all
  three debug points in fetchModels (request start, failure, response)
- Log request failures with proxy context

Core fetchWithTimeout:
- Non-positive timeout (<=0) throws FetchError immediately instead of
  leaking raw AbortError through AbortController
- Added clearTimeout in finally block to prevent timer leaks
- Accept optional { redirect } parameter

i18n:
- Update 3 keys per locale (9 files): Failed to fetch models, baseUrl
  points to, Request to {{url}} failed

Tests (48 total, +8 new):
- data field present but not an array
- baseUrl with query string preserves params
- URL in non-2xx error message
- "points to" wording in SSRF error
- Subcommand metadata (name, kind, supportedModes)
- Zero/negative timeout throws FetchError (not raw AbortError)
- SSRF tests assert fetch was never called (short-circuits before network)
- URL in list subcommand error message

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
xaelistic pushed a commit to xaelistic/qwen-code that referenced this pull request Jun 7, 2026
Co-authored-by: Abhi <43648792+abhipatel12@users.noreply.github.com>
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