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🐛 fix: sanitize search grounding image titles to prevent XSS#13303

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arvinxx merged 3 commits into
canaryfrom
fix/xss-search-grounding-image-title
Mar 26, 2026
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🐛 fix: sanitize search grounding image titles to prevent XSS#13303
arvinxx merged 3 commits into
canaryfrom
fix/xss-search-grounding-image-title

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@arvinxx

@arvinxx arvinxx commented Mar 26, 2026

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Summary

  • Replace dangerouslySetInnerHTML={{ __html: title }} with stripHtml() text rendering in SearchGrounding and ImageSearchRef/Render components

Details

Google search grounding API returns imageResults[].title that may contain HTML (e.g. <b> tags for keyword highlighting). The existing code rendered these titles via dangerouslySetInnerHTML without sanitization, allowing arbitrary script injection.

Both files already had a stripHtml function used for alt/title attributes but not for the rendered content. This PR applies stripHtml() consistently.

Security advisory: GHSA-m5qx-g8hx-5f2p

Test plan

  • Verify search grounding image titles still display correctly (plain text, no HTML formatting)
  • Confirm no XSS possible via crafted image title like <img src=x onerror="alert(1)">

🤖 Generated with Claude Code

Replace dangerouslySetInnerHTML with stripHtml() for image result titles
in SearchGrounding and ImageSearchRef components to prevent stored XSS
attacks via malicious search result data.

Ref: GHSA-m5qx-g8hx-5f2p

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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{image.title && (
<div className={styles.imageTitle} dangerouslySetInnerHTML={{ __html: image.title }} />
)}
{image.title && <div className={styles.imageTitle}>{stripHtml(image.title)}</div>}

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P2 Badge Decode HTML entities before rendering image ref titles

Rendering stripHtml(image.title) here strips tags but does not decode entities in this file’s helper, so titles like AT&amp;T now display literally as AT&amp;T in the popover. Before this change, dangerouslySetInnerHTML decoded entities automatically, so this is a user-visible regression for image titles returned with HTML-encoded characters from grounding providers.

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@lobehubbot

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@canisminor1990 @ONLY-yours - This PR fixes XSS in search grounding image titles (markdown rendering + search grounding components). Please take a look.

@arvinxx arvinxx changed the base branch from canary to dev March 26, 2026 12:07
@arvinxx

arvinxx commented Mar 26, 2026

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@sxjeru This XSS vulnerability originates from the search image result title rendering you introduced in #12537, where dangerouslySetInnerHTML was not sanitized.


This comment was translated by Claude.

Original Content

@sxjeru 这个 XSS 漏洞出在你 #12537 引入的搜索图片结果 title 渲染上,dangerouslySetInnerHTML 没有做 sanitize

@arvinxx arvinxx changed the base branch from dev to canary March 26, 2026 12:08
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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.71%. Comparing base (093fa7b) to head (9e2487f).
⚠️ Report is 2 commits behind head on canary.

Additional details and impacted files
@@            Coverage Diff             @@
##           canary   #13303      +/-   ##
==========================================
- Coverage   66.71%   66.71%   -0.01%     
==========================================
  Files        1884     1884              
  Lines      150871   150870       -1     
  Branches    15184    15184              
==========================================
- Hits       100660   100659       -1     
  Misses      50100    50100              
  Partials      111      111              
Flag Coverage Δ
app 58.09% <100.00%> (-0.01%) ⬇️
database 96.64% <ø> (ø)
packages/agent-runtime 89.61% <ø> (ø)
packages/context-engine 83.22% <ø> (ø)
packages/conversation-flow 92.36% <ø> (ø)
packages/file-loaders 87.02% <ø> (ø)
packages/memory-user-memory 66.68% <ø> (ø)
packages/model-bank 99.85% <ø> (ø)
packages/model-runtime 84.53% <ø> (ø)
packages/prompts 67.76% <ø> (ø)
packages/python-interpreter 92.90% <ø> (ø)
packages/ssrf-safe-fetch 0.00% <ø> (ø)
packages/utils 90.41% <ø> (ø)
packages/web-crawler 88.82% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components Coverage Δ
Store 66.07% <ø> (ø)
Services 49.56% <ø> (ø)
Server 67.39% <ø> (ø)
Libs 45.46% <ø> (ø)
Utils 91.01% <ø> (ø)
🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

arvinxx and others added 2 commits March 26, 2026 20:16
…ution risk

The old plugin render system (ui.mode === 'module') that used SystemJS
to dynamically load and execute JS from untrusted URLs has been fully
retired. Remove SystemJsRender and systemjs dependency entirely.

Ref: GHSA-46v7-wvmj-6vf7

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@arvinxx arvinxx merged commit 926de07 into canary Mar 26, 2026
31 checks passed
@arvinxx arvinxx deleted the fix/xss-search-grounding-image-title branch March 26, 2026 14:38
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❤️ Great PR @arvinxx ❤️

The growth of project is inseparable from user feedback and contribution, thanks for your contribution! If you are interesting with the lobehub developer community, please join our discord and then dm @arvinxx or @canisminor1990. They will invite you to our private developer channel. We are talking about the lobe-chat development or sharing ai newsletter around the world.

ONLY-yours added a commit that referenced this pull request Mar 27, 2026
# 🚀 release: 20260326

This release includes **91 commits**. Key updates are below.


- **Agent can now execute background tasks** — Agents can perform
long-running operations without blocking your conversation.
[#13289](#13289)
- **Better error messages** — Redesigned error UI across chat and image
generation with clearer explanations and recovery options.
[#13302](#13302)
- **Smoother topic switching** — No more full page reloads when
switching topics while an agent is responding.
[#13309](#13309)
- **Faster image uploads** — Large images are now automatically
compressed to 1920px before upload, reducing wait times.
[#13224](#13224)
- **Improved knowledge base** — Documents are now properly parsed before
chunking, improving retrieval accuracy.
[#13221](#13221)

### Bot Platform

- **WeChat Bot support** — You can now connect LobeChat to WeChat, in
addition to Discord.
[#13191](#13191)
- **Richer bot responses** — Bots now support custom markdown rendering
and context injection.
[#13294](#13294)
- **New bot commands** — Added `/new` to start fresh conversations and
`/stop` to halt generation.
[#13194](#13194)
- **Discord stability fixes** — Fixed thread creation issues and Redis
connection drops.
[#13228](#13228)
[#13205](#13205)

### Models & Providers

- **GLM-5** is now available in the LobeHub model list.
[#13189](#13189)
- **Coding Plan providers** — Added support for code planning assistant
providers. [#13203](#13203)
- **Tencent Hunyuan 3.0 ImageGen** — New image generation model from
Tencent. [#13166](#13166)
- **Gemini content handling** — Better handling when Gemini blocks
content due to safety filters.
[#13270](#13270)
- **Claude token limits fixed** — Corrected max window tokens for
Anthropic Claude models.
[#13206](#13206)

### Skills & Tools

- **Auto credential injection** — Skills can now automatically request
and use required credentials.
[#13124](#13124)
- **Smarter tool permissions** — Built-in tools skip confirmation for
safe paths like `/tmp`.
[#13232](#13232)
- **Model switcher improvements** — Quick access to provider settings
and visual highlight for default model.
[#13220](#13220)

### Memory

- **Bulk delete memories** — You can now delete all memory entries at
once. [#13161](#13161)
- **Per-agent memory control** — Memory injection now respects
individual agent settings.
[#13265](#13265)

### Desktop App

- **Gateway connection** — Desktop app can now connect to LobeHub
Gateway for enhanced features.
[#13234](#13234)
- **Connection status indicator** — See gateway connection status in the
titlebar. [#13260](#13260)
- **Settings persistence** — Gateway toggle state now persists across
app restarts. [#13300](#13300)

### CLI

- **API key authentication** — CLI now supports API key auth for
programmatic access.
[#13190](#13190)
- **Shell completion** — Tab completion for bash/zsh/fish shells.
[#13164](#13164)
- **Man pages** — Built-in manual pages for CLI commands.
[#13200](#13200)

### Security

- **XSS protection** — Sanitized search result image titles to prevent
script injection.
[#13303](#13303)
- **Workflow hardening** — Fixed potential shell injection in release
automation. [#13319](#13319)
- **Dependency update** — Updated nodemailer to address security
advisory. [#13326](#13326)

### Bug Fixes

- Fixed skill page not redirecting correctly after import.
[#13255](#13255)
[#13261](#13261)
- Fixed token counting in group chats.
[#13247](#13247)
- Fixed editor not resetting when switching to empty pages.
[#13229](#13229)
- Fixed manual tool toggle not working.
[#13218](#13218)
- Fixed Search1API response parsing.
[#13207](#13207)
[#13208](#13208)
- Fixed mobile topic menus rendering issues.
[#12477](#12477)
- Fixed history count calculation for accurate context.
[#13051](#13051)
- Added missing Turkish translations.
[#13196](#13196)

### Credits

Huge thanks to these contributors:

@bakiburakogun @hardy-one @Zhouguanyang @sxjeru @hezhijie0327 @arvinxx
@cy948 @CanisMinor @Innei @lijian @lobehubbot @neko @rdmclin2
@rivertwilight @tjx666
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2 participants