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dotgit: skip writing pack files that already exist on disk#1944

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fix-perms
Mar 31, 2026
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dotgit: skip writing pack files that already exist on disk#1944
pjbgf merged 1 commit intoreleases/v5.xfrom
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@pjbgf pjbgf commented Mar 31, 2026

PackWriter.save() used fs.Create() unconditionally for .idx and .pack files. After the first write, fixPermissions() sets these to read-only (0o444), so a subsequent fetch/pull producing the same pack hash would fail with "permission denied" when Create() tried to truncate the existing read-only file.

Each file (.idx, .pack, .rev) is now checked individually with Lstat before creation — if it already exists, the write is skipped. This mirrors the existing pattern in ObjectWriter.save() for loose objects.

Also switches ObjectWriter.save() from Stat to Lstat for consistency.

Relates to #1942.

Copilot AI review requested due to automatic review settings March 31, 2026 12:08
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Pull request overview

Fixes a regression where fixPermissions() makes pack/index files read-only, causing subsequent operations that produce the same pack hash to fail when attempting to recreate/truncate existing pack artifacts.

Changes:

  • Update PackWriter.save() to Lstat each pack artifact and skip writing when the target already exists.
  • Switch ObjectWriter.save() from Stat to Lstat for consistency with content-addressable semantics.
  • Add a regression test covering rewriting when .pack/.idx already exist and are read-only.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File Description
storage/filesystem/dotgit/writers.go Avoids truncating existing read-only pack/index files by checking existence before write/rename.
storage/filesystem/dotgit/writers_test.go Adds coverage for the “existing read-only pack/index” regression scenario.

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

Comment thread storage/filesystem/dotgit/writers.go
Comment thread storage/filesystem/dotgit/writers.go
Comment thread storage/filesystem/dotgit/writers.go
…t on disk

PackWriter.save() used fs.Create() unconditionally for .idx and .pack
files. After the first write, fixPermissions() sets these to read-only
(0o444), so a subsequent fetch/pull producing the same pack hash would
fail with "permission denied" when Create() tried to truncate the
existing read-only file.

Each file (.idx, .pack, .rev) is now checked individually with Lstat
before creation — if it already exists, the write is skipped. This
mirrors the existing pattern in ObjectWriter.save() for loose objects.

Also switches ObjectWriter.save() from Stat to Lstat for consistency.

Signed-off-by: Paulo Gomes <paulo@entire.io>
Assisted-by: Assisted-by: Claude Opus 4.6 <noreply@anthropic.com>
Entire-Checkpoint: 98ea9828f0ce
@pjbgf pjbgf merged commit 45ae193 into releases/v5.x Mar 31, 2026
14 checks passed
@pjbgf pjbgf deleted the fix-perms branch March 31, 2026 12:44
Maks1mS pushed a commit to stplr-dev/stplr that referenced this pull request Apr 2, 2026
This PR contains the following updates:

| Package | Type | Update | Change | OpenSSF |
|---|---|---|---|---|
| [github.com/go-git/go-git/v5](https://github.com/go-git/go-git) | require | patch | `v5.17.1` → `v5.17.2` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/go-git/go-git/badge)](https://securityscorecards.dev/viewer/?uri=github.com/go-git/go-git) |

---

> ⚠️ **Warning**
>
> Some dependencies could not be looked up. Check the [Dependency Dashboard](issues/23) for more information.

---

### Release Notes

<details>
<summary>go-git/go-git (github.com/go-git/go-git/v5)</summary>

### [`v5.17.2`](https://github.com/go-git/go-git/releases/tag/v5.17.2)

[Compare Source](go-git/go-git@v5.17.1...v5.17.2)

#### What's Changed

- build: Update module github.com/go-git/go-git/v5 to v5.17.1 \[SECURITY] (releases/v5.x) by [@&#8203;go-git-renovate](https://github.com/go-git-renovate)\[bot] in [#&#8203;1941](go-git/go-git#1941)
- dotgit: skip writing pack files that already exist on disk by [@&#8203;pjbgf](https://github.com/pjbgf) in [#&#8203;1944](go-git/go-git#1944)

:warning: This release fixes a bug ([#&#8203;1942](go-git/go-git#1942)) that blocked some users from upgrading to `v5.17.1`. Thanks [@&#8203;pskrbasu](https://github.com/pskrbasu) for reporting it. 🙇

**Full Changelog**: <go-git/go-git@v5.17.1...v5.17.2>

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At 12:00 AM through 04:59 AM and 10:00 PM through 11:59 PM, Monday through Friday ( * 0-4,22-23 * * 1-5 ), Only on Sunday and Saturday ( * * * * 0,6 ) (UTC), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

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externalmirrors-syncer Bot pushed a commit to external-mirrors/forgejo that referenced this pull request Apr 18, 2026
…forgejo) (#12174)

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [github.com/go-git/go-git/v5](https://github.com/go-git/go-git) | `v5.17.1` → `v5.18.0` | ![age](https://developer.mend.io/api/mc/badges/age/go/github.com%2fgo-git%2fgo-git%2fv5/v5.18.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/go/github.com%2fgo-git%2fgo-git%2fv5/v5.17.1/v5.18.0?slim=true) |

---

### go-git: Credential leak via cross-host redirect in smart HTTP transport
[GHSA-3xc5-wrhm-f963](GHSA-3xc5-wrhm-f963)

<details>
<summary>More information</summary>

#### Details
##### Impact
`go-git` may leak HTTP authentication credentials when following redirects during smart-HTTP clone and fetch operations.

If a remote repository responds to the initial `/info/refs` request with a redirect to a different host, go-git updates the session endpoint to the redirected location and reuses the original authentication for subsequent requests. This can result in the credentials (e.g. Authorization headers) being sent to an unintended host.

An attacker controlling or influencing the redirect target can capture these credentials and potentially reuse them to access the victim’s repositories or other resources, depending on the scope of the credential.

**Clients using `go-git` exclusively with trusted remotes (for example, GitHub or GitLab), and over a secure HTTPS connection, are not affected by this issue.** The risk arises when interacting with untrusted or misconfigured Git servers, or when using unsecured HTTP connections, which is not recommended. Such configurations also expose clients to a broader class of security risks beyond this issue, including credential interception and tampering of repository data.

##### Patches
Users should upgrade to `v5.18.0`, or `v6.0.0-alpha.2`, in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported `go-git` version.

The patched versions add support for configuring [followRedirects](https://git-scm.com/docs/git-config#Documentation/git-config.txt-httpfollowRedirects). In line with upstream behaviour, the default is now `initial`, while users can opt into `FollowRedirects` or `NoFollowRedirects` programmatically.

##### Credit
Thanks to the 3 separate reports from @&#8203;celinke97, @&#8203;N0zoM1z0 and @&#8203;AyushParkara. Thanks for finding and reporting this issue privately to the `go-git` project. 🙇

#### Severity
- CVSS Score: 4.7 / 10 (Medium)
- Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N`

#### References
- [https://github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963](https://github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963)
- [https://github.com/go-git/go-git](https://github.com/go-git/go-git)

This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-3xc5-wrhm-f963) and the [GitHub Advisory Database](https://github.com/github/advisory-database) ([CC-BY 4.0](https://github.com/github/advisory-database/blob/main/LICENSE.md)).
</details>

---

### Release Notes

<details>
<summary>go-git/go-git (github.com/go-git/go-git/v5)</summary>

### [`v5.18.0`](https://github.com/go-git/go-git/releases/tag/v5.18.0)

[Compare Source](go-git/go-git@v5.17.2...v5.18.0)

#### What's Changed

- plumbing: transport/http, Add support for followRedirects policy by [@&#8203;pjbgf](https://github.com/pjbgf) in [#&#8203;2004](go-git/go-git#2004)

**Full Changelog**: <go-git/go-git@v5.17.2...v5.18.0>

### [`v5.17.2`](https://github.com/go-git/go-git/releases/tag/v5.17.2)

[Compare Source](go-git/go-git@v5.17.1...v5.17.2)

#### What's Changed

- build: Update module github.com/go-git/go-git/v5 to v5.17.1 \[SECURITY] (releases/v5.x) by [@&#8203;go-git-renovate](https://github.com/go-git-renovate)\[bot] in [#&#8203;1941](go-git/go-git#1941)
- dotgit: skip writing pack files that already exist on disk by [@&#8203;pjbgf](https://github.com/pjbgf) in [#&#8203;1944](go-git/go-git#1944)

:warning: This release fixes a bug ([#&#8203;1942](go-git/go-git#1942)) that blocked some users from upgrading to `v5.17.1`. Thanks [@&#8203;pskrbasu](https://github.com/pskrbasu) for reporting it. 🙇

**Full Changelog**: <go-git/go-git@v5.17.1...v5.17.2>

</details>

---

### Configuration

📅 **Schedule**: (UTC)

- Branch creation
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- Automerge
  - Between 12:00 AM and 03:59 AM (`* 0-3 * * *`)

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

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---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4xMTEuMCIsInVwZGF0ZWRJblZlciI6IjQzLjExMS4wIiwidGFyZ2V0QnJhbmNoIjoiZm9yZ2VqbyIsImxhYmVscyI6WyJkZXBlbmRlbmN5LXVwZ3JhZGUiLCJ0ZXN0L25vdC1uZWVkZWQiXX0=-->

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12174
Reviewed-by: Mathieu Fenniak <mfenniak@noreply.codeberg.org>
Co-authored-by: Renovate Bot <bot@kriese.eu>
Co-committed-by: Renovate Bot <bot@kriese.eu>
externalmirrors-syncer Bot pushed a commit to external-mirrors/forgejo that referenced this pull request Apr 18, 2026
…v15.0/forgejo) (#12177)

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [github.com/go-git/go-git/v5](https://github.com/go-git/go-git) | `v5.17.1` → `v5.18.0` | ![age](https://developer.mend.io/api/mc/badges/age/go/github.com%2fgo-git%2fgo-git%2fv5/v5.18.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/go/github.com%2fgo-git%2fgo-git%2fv5/v5.17.1/v5.18.0?slim=true) |

---

### go-git: Credential leak via cross-host redirect in smart HTTP transport
[GHSA-3xc5-wrhm-f963](GHSA-3xc5-wrhm-f963)

<details>
<summary>More information</summary>

#### Details
##### Impact
`go-git` may leak HTTP authentication credentials when following redirects during smart-HTTP clone and fetch operations.

If a remote repository responds to the initial `/info/refs` request with a redirect to a different host, go-git updates the session endpoint to the redirected location and reuses the original authentication for subsequent requests. This can result in the credentials (e.g. Authorization headers) being sent to an unintended host.

An attacker controlling or influencing the redirect target can capture these credentials and potentially reuse them to access the victim’s repositories or other resources, depending on the scope of the credential.

**Clients using `go-git` exclusively with trusted remotes (for example, GitHub or GitLab), and over a secure HTTPS connection, are not affected by this issue.** The risk arises when interacting with untrusted or misconfigured Git servers, or when using unsecured HTTP connections, which is not recommended. Such configurations also expose clients to a broader class of security risks beyond this issue, including credential interception and tampering of repository data.

##### Patches
Users should upgrade to `v5.18.0`, or `v6.0.0-alpha.2`, in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported `go-git` version.

The patched versions add support for configuring [followRedirects](https://git-scm.com/docs/git-config#Documentation/git-config.txt-httpfollowRedirects). In line with upstream behaviour, the default is now `initial`, while users can opt into `FollowRedirects` or `NoFollowRedirects` programmatically.

##### Credit
Thanks to the 3 separate reports from @&#8203;celinke97, @&#8203;N0zoM1z0 and @&#8203;AyushParkara. Thanks for finding and reporting this issue privately to the `go-git` project. 🙇

#### Severity
- CVSS Score: 4.7 / 10 (Medium)
- Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N`

#### References
- [https://github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963](https://github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963)
- [https://github.com/go-git/go-git](https://github.com/go-git/go-git)

This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-3xc5-wrhm-f963) and the [GitHub Advisory Database](https://github.com/github/advisory-database) ([CC-BY 4.0](https://github.com/github/advisory-database/blob/main/LICENSE.md)).
</details>

---

### Release Notes

<details>
<summary>go-git/go-git (github.com/go-git/go-git/v5)</summary>

### [`v5.18.0`](https://github.com/go-git/go-git/releases/tag/v5.18.0)

[Compare Source](go-git/go-git@v5.17.2...v5.18.0)

#### What's Changed

- plumbing: transport/http, Add support for followRedirects policy by [@&#8203;pjbgf](https://github.com/pjbgf) in [#&#8203;2004](go-git/go-git#2004)

**Full Changelog**: <go-git/go-git@v5.17.2...v5.18.0>

### [`v5.17.2`](https://github.com/go-git/go-git/releases/tag/v5.17.2)

[Compare Source](go-git/go-git@v5.17.1...v5.17.2)

#### What's Changed

- build: Update module github.com/go-git/go-git/v5 to v5.17.1 \[SECURITY] (releases/v5.x) by [@&#8203;go-git-renovate](https://github.com/go-git-renovate)\[bot] in [#&#8203;1941](go-git/go-git#1941)
- dotgit: skip writing pack files that already exist on disk by [@&#8203;pjbgf](https://github.com/pjbgf) in [#&#8203;1944](go-git/go-git#1944)

:warning: This release fixes a bug ([#&#8203;1942](go-git/go-git#1942)) that blocked some users from upgrading to `v5.17.1`. Thanks [@&#8203;pskrbasu](https://github.com/pskrbasu) for reporting it. 🙇

**Full Changelog**: <go-git/go-git@v5.17.1...v5.17.2>

</details>

---

### Configuration

📅 **Schedule**: (UTC)

- Branch creation
  - ""
- Automerge
  - Between 12:00 AM and 03:59 AM (`* 0-3 * * *`)

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

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---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4xMTEuMCIsInVwZGF0ZWRJblZlciI6IjQzLjExMS4wIiwidGFyZ2V0QnJhbmNoIjoidjE1LjAvZm9yZ2VqbyIsImxhYmVscyI6WyJkZXBlbmRlbmN5LXVwZ3JhZGUiLCJ0ZXN0L25vdC1uZWVkZWQiXX0=-->

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12177
Reviewed-by: Mathieu Fenniak <mfenniak@noreply.codeberg.org>
Co-authored-by: Renovate Bot <bot@kriese.eu>
Co-committed-by: Renovate Bot <bot@kriese.eu>
externalmirrors-syncer Bot pushed a commit to external-mirrors/forgejo that referenced this pull request Apr 18, 2026
…0/forgejo) (#12175)

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [github.com/go-git/go-git/v5](https://github.com/go-git/go-git) | `v5.17.1` → `v5.18.0` | ![age](https://developer.mend.io/api/mc/badges/age/go/github.com%2fgo-git%2fgo-git%2fv5/v5.18.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/go/github.com%2fgo-git%2fgo-git%2fv5/v5.17.1/v5.18.0?slim=true) |

---

> ⚠️ **Warning**
>
> Some dependencies could not be looked up. Check the [Dependency Dashboard](issues/2779) for more information.

---

### go-git: Credential leak via cross-host redirect in smart HTTP transport
[GHSA-3xc5-wrhm-f963](GHSA-3xc5-wrhm-f963)

<details>
<summary>More information</summary>

#### Details
##### Impact
`go-git` may leak HTTP authentication credentials when following redirects during smart-HTTP clone and fetch operations.

If a remote repository responds to the initial `/info/refs` request with a redirect to a different host, go-git updates the session endpoint to the redirected location and reuses the original authentication for subsequent requests. This can result in the credentials (e.g. Authorization headers) being sent to an unintended host.

An attacker controlling or influencing the redirect target can capture these credentials and potentially reuse them to access the victim’s repositories or other resources, depending on the scope of the credential.

**Clients using `go-git` exclusively with trusted remotes (for example, GitHub or GitLab), and over a secure HTTPS connection, are not affected by this issue.** The risk arises when interacting with untrusted or misconfigured Git servers, or when using unsecured HTTP connections, which is not recommended. Such configurations also expose clients to a broader class of security risks beyond this issue, including credential interception and tampering of repository data.

##### Patches
Users should upgrade to `v5.18.0`, or `v6.0.0-alpha.2`, in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported `go-git` version.

The patched versions add support for configuring [followRedirects](https://git-scm.com/docs/git-config#Documentation/git-config.txt-httpfollowRedirects). In line with upstream behaviour, the default is now `initial`, while users can opt into `FollowRedirects` or `NoFollowRedirects` programmatically.

##### Credit
Thanks to the 3 separate reports from @&#8203;celinke97, @&#8203;N0zoM1z0 and @&#8203;AyushParkara. Thanks for finding and reporting this issue privately to the `go-git` project. 🙇

#### Severity
- CVSS Score: 4.7 / 10 (Medium)
- Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N`

#### References
- [https://github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963](https://github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963)
- [https://github.com/go-git/go-git](https://github.com/go-git/go-git)

This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-3xc5-wrhm-f963) and the [GitHub Advisory Database](https://github.com/github/advisory-database) ([CC-BY 4.0](https://github.com/github/advisory-database/blob/main/LICENSE.md)).
</details>

---

### Release Notes

<details>
<summary>go-git/go-git (github.com/go-git/go-git/v5)</summary>

### [`v5.18.0`](https://github.com/go-git/go-git/releases/tag/v5.18.0)

[Compare Source](go-git/go-git@v5.17.2...v5.18.0)

#### What's Changed

- plumbing: transport/http, Add support for followRedirects policy by [@&#8203;pjbgf](https://github.com/pjbgf) in [#&#8203;2004](go-git/go-git#2004)

**Full Changelog**: <go-git/go-git@v5.17.2...v5.18.0>

### [`v5.17.2`](https://github.com/go-git/go-git/releases/tag/v5.17.2)

[Compare Source](go-git/go-git@v5.17.1...v5.17.2)

#### What's Changed

- build: Update module github.com/go-git/go-git/v5 to v5.17.1 \[SECURITY] (releases/v5.x) by [@&#8203;go-git-renovate](https://github.com/go-git-renovate)\[bot] in [#&#8203;1941](go-git/go-git#1941)
- dotgit: skip writing pack files that already exist on disk by [@&#8203;pjbgf](https://github.com/pjbgf) in [#&#8203;1944](go-git/go-git#1944)

:warning: This release fixes a bug ([#&#8203;1942](go-git/go-git#1942)) that blocked some users from upgrading to `v5.17.1`. Thanks [@&#8203;pskrbasu](https://github.com/pskrbasu) for reporting it. 🙇

**Full Changelog**: <go-git/go-git@v5.17.1...v5.17.2>

</details>

---

### Configuration

📅 **Schedule**: (UTC)

- Branch creation
  - ""
- Automerge
  - Between 12:00 AM and 03:59 AM (`* 0-3 * * *`)

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

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---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4xMTEuMCIsInVwZGF0ZWRJblZlciI6IjQzLjExMS4wIiwidGFyZ2V0QnJhbmNoIjoidjExLjAvZm9yZ2VqbyIsImxhYmVscyI6WyJkZXBlbmRlbmN5LXVwZ3JhZGUiLCJ0ZXN0L25vdC1uZWVkZWQiXX0=-->

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12175
Reviewed-by: Mathieu Fenniak <mfenniak@noreply.codeberg.org>
Co-authored-by: Renovate Bot <bot@kriese.eu>
Co-committed-by: Renovate Bot <bot@kriese.eu>
externalmirrors-syncer Bot pushed a commit to external-mirrors/forgejo that referenced this pull request Apr 18, 2026
…v14.0/forgejo) (#12176)

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [github.com/go-git/go-git/v5](https://github.com/go-git/go-git) | `v5.17.1` → `v5.18.0` | ![age](https://developer.mend.io/api/mc/badges/age/go/github.com%2fgo-git%2fgo-git%2fv5/v5.18.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/go/github.com%2fgo-git%2fgo-git%2fv5/v5.17.1/v5.18.0?slim=true) |

---

### go-git: Credential leak via cross-host redirect in smart HTTP transport
[GHSA-3xc5-wrhm-f963](GHSA-3xc5-wrhm-f963)

<details>
<summary>More information</summary>

#### Details
##### Impact
`go-git` may leak HTTP authentication credentials when following redirects during smart-HTTP clone and fetch operations.

If a remote repository responds to the initial `/info/refs` request with a redirect to a different host, go-git updates the session endpoint to the redirected location and reuses the original authentication for subsequent requests. This can result in the credentials (e.g. Authorization headers) being sent to an unintended host.

An attacker controlling or influencing the redirect target can capture these credentials and potentially reuse them to access the victim’s repositories or other resources, depending on the scope of the credential.

**Clients using `go-git` exclusively with trusted remotes (for example, GitHub or GitLab), and over a secure HTTPS connection, are not affected by this issue.** The risk arises when interacting with untrusted or misconfigured Git servers, or when using unsecured HTTP connections, which is not recommended. Such configurations also expose clients to a broader class of security risks beyond this issue, including credential interception and tampering of repository data.

##### Patches
Users should upgrade to `v5.18.0`, or `v6.0.0-alpha.2`, in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported `go-git` version.

The patched versions add support for configuring [followRedirects](https://git-scm.com/docs/git-config#Documentation/git-config.txt-httpfollowRedirects). In line with upstream behaviour, the default is now `initial`, while users can opt into `FollowRedirects` or `NoFollowRedirects` programmatically.

##### Credit
Thanks to the 3 separate reports from @&#8203;celinke97, @&#8203;N0zoM1z0 and @&#8203;AyushParkara. Thanks for finding and reporting this issue privately to the `go-git` project. 🙇

#### Severity
- CVSS Score: 4.7 / 10 (Medium)
- Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N`

#### References
- [https://github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963](https://github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963)
- [https://github.com/go-git/go-git](https://github.com/go-git/go-git)

This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-3xc5-wrhm-f963) and the [GitHub Advisory Database](https://github.com/github/advisory-database) ([CC-BY 4.0](https://github.com/github/advisory-database/blob/main/LICENSE.md)).
</details>

---

### Release Notes

<details>
<summary>go-git/go-git (github.com/go-git/go-git/v5)</summary>

### [`v5.18.0`](https://github.com/go-git/go-git/releases/tag/v5.18.0)

[Compare Source](go-git/go-git@v5.17.2...v5.18.0)

#### What's Changed

- plumbing: transport/http, Add support for followRedirects policy by [@&#8203;pjbgf](https://github.com/pjbgf) in [#&#8203;2004](go-git/go-git#2004)

**Full Changelog**: <go-git/go-git@v5.17.2...v5.18.0>

### [`v5.17.2`](https://github.com/go-git/go-git/releases/tag/v5.17.2)

[Compare Source](go-git/go-git@v5.17.1...v5.17.2)

#### What's Changed

- build: Update module github.com/go-git/go-git/v5 to v5.17.1 \[SECURITY] (releases/v5.x) by [@&#8203;go-git-renovate](https://github.com/go-git-renovate)\[bot] in [#&#8203;1941](go-git/go-git#1941)
- dotgit: skip writing pack files that already exist on disk by [@&#8203;pjbgf](https://github.com/pjbgf) in [#&#8203;1944](go-git/go-git#1944)

:warning: This release fixes a bug ([#&#8203;1942](go-git/go-git#1942)) that blocked some users from upgrading to `v5.17.1`. Thanks [@&#8203;pskrbasu](https://github.com/pskrbasu) for reporting it. 🙇

**Full Changelog**: <go-git/go-git@v5.17.1...v5.17.2>

</details>

---

### Configuration

📅 **Schedule**: (UTC)

- Branch creation
  - ""
- Automerge
  - Between 12:00 AM and 03:59 AM (`* 0-3 * * *`)

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4xMTEuMCIsInVwZGF0ZWRJblZlciI6IjQzLjExMS4wIiwidGFyZ2V0QnJhbmNoIjoidjE0LjAvZm9yZ2VqbyIsImxhYmVscyI6WyJkZXBlbmRlbmN5LXVwZ3JhZGUiLCJ0ZXN0L25vdC1uZWVkZWQiXX0=-->

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12176
Reviewed-by: Mathieu Fenniak <mfenniak@noreply.codeberg.org>
Co-authored-by: Renovate Bot <bot@kriese.eu>
Co-committed-by: Renovate Bot <bot@kriese.eu>
eleboucher pushed a commit to eleboucher/runner that referenced this pull request Apr 20, 2026
This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [github.com/go-git/go-git/v5](https://github.com/go-git/go-git) | `v5.17.1` → `v5.18.0` | ![age](https://developer.mend.io/api/mc/badges/age/go/github.com%2fgo-git%2fgo-git%2fv5/v5.18.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/go/github.com%2fgo-git%2fgo-git%2fv5/v5.17.1/v5.18.0?slim=true) |

---

### go-git: Credential leak via cross-host redirect in smart HTTP transport
[GHSA-3xc5-wrhm-f963](GHSA-3xc5-wrhm-f963)

<details>
<summary>More information</summary>

#### Details
##### Impact
`go-git` may leak HTTP authentication credentials when following redirects during smart-HTTP clone and fetch operations.

If a remote repository responds to the initial `/info/refs` request with a redirect to a different host, go-git updates the session endpoint to the redirected location and reuses the original authentication for subsequent requests. This can result in the credentials (e.g. Authorization headers) being sent to an unintended host.

An attacker controlling or influencing the redirect target can capture these credentials and potentially reuse them to access the victim’s repositories or other resources, depending on the scope of the credential.

**Clients using `go-git` exclusively with trusted remotes (for example, GitHub or GitLab), and over a secure HTTPS connection, are not affected by this issue.** The risk arises when interacting with untrusted or misconfigured Git servers, or when using unsecured HTTP connections, which is not recommended. Such configurations also expose clients to a broader class of security risks beyond this issue, including credential interception and tampering of repository data.

##### Patches
Users should upgrade to `v5.18.0`, or `v6.0.0-alpha.2`, in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported `go-git` version.

The patched versions add support for configuring [followRedirects](https://git-scm.com/docs/git-config#Documentation/git-config.txt-httpfollowRedirects). In line with upstream behaviour, the default is now `initial`, while users can opt into `FollowRedirects` or `NoFollowRedirects` programmatically.

##### Credit
Thanks to the 3 separate reports from @&#8203;celinke97, @&#8203;N0zoM1z0 and @&#8203;AyushParkara. Thanks for finding and reporting this issue privately to the `go-git` project. 🙇

#### Severity
- CVSS Score: 4.7 / 10 (Medium)
- Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N`

#### References
- [https://github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963](https://github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963)
- [https://github.com/go-git/go-git](https://github.com/go-git/go-git)

This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-3xc5-wrhm-f963) and the [GitHub Advisory Database](https://github.com/github/advisory-database) ([CC-BY 4.0](https://github.com/github/advisory-database/blob/main/LICENSE.md)).
</details>

---

### Release Notes

<details>
<summary>go-git/go-git (github.com/go-git/go-git/v5)</summary>

### [`v5.18.0`](https://github.com/go-git/go-git/releases/tag/v5.18.0)

[Compare Source](go-git/go-git@v5.17.2...v5.18.0)

#### What's Changed

- plumbing: transport/http, Add support for followRedirects policy by [@&#8203;pjbgf](https://github.com/pjbgf) in [#&#8203;2004](go-git/go-git#2004)

**Full Changelog**: <go-git/go-git@v5.17.2...v5.18.0>

### [`v5.17.2`](https://github.com/go-git/go-git/releases/tag/v5.17.2)

[Compare Source](go-git/go-git@v5.17.1...v5.17.2)

#### What's Changed

- build: Update module github.com/go-git/go-git/v5 to v5.17.1 \[SECURITY] (releases/v5.x) by [@&#8203;go-git-renovate](https://github.com/go-git-renovate)\[bot] in [#&#8203;1941](go-git/go-git#1941)
- dotgit: skip writing pack files that already exist on disk by [@&#8203;pjbgf](https://github.com/pjbgf) in [#&#8203;1944](go-git/go-git#1944)

:warning: This release fixes a bug ([#&#8203;1942](go-git/go-git#1942)) that blocked some users from upgrading to `v5.17.1`. Thanks [@&#8203;pskrbasu](https://github.com/pskrbasu) for reporting it. 🙇

**Full Changelog**: <go-git/go-git@v5.17.1...v5.17.2>

</details>

---

### Configuration

📅 **Schedule**: (UTC)

- Branch creation
  - ""
- Automerge
  - Between 12:00 AM and 03:59 AM (`* 0-3 * * *`)

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4xMTEuMCIsInVwZGF0ZWRJblZlciI6IjQzLjExMS4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJLaW5kL0RlcGVuZGVuY3lVcGRhdGUiLCJydW4tZW5kLXRvLWVuZC10ZXN0cyJdfQ==-->

Reviewed-on: https://code.forgejo.org/forgejo/runner/pulls/1485
Reviewed-by: Mathieu Fenniak <mfenniak@noreply.code.forgejo.org>
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