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Update module github.com/go-git/go-billy/v5 to v5.9.0 [SECURITY] - #578

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renovate/go-github.com-go-git-go-billy-v5-vulnerability

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This PR contains the following updates:

Package Change Age Confidence
github.com/go-git/go-billy/v5 v5.6.2 → v5.9.0 age confidence

Warning

Some dependencies could not be looked up. Check the warning logs for more information.


go-billy: Lack of depth and cycle detection in symlink resolution may lead to infinite loops and resource exhaustion

CVE-2026-44740 / GHSA-m3xc-h892-ggx6

More information

Details

Impact

Multiple components may improperly handle crafted or malformed input, resulting in panics, infinite loops, uncontrolled recursion, or excessive resource consumption.

These issues arise from insufficient validation and missing safety mechanisms such as cycle detection, recursion limits, or defensive handling of unexpected states when processing untrusted repository data and filesystem structures.

Patches

Users should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-billy version.

Credits

Thanks to @​faran66 for finding and reporting this issue privately to the go-git project. 🙇

Severity

  • CVSS Score: 6.5 / 10 (Medium)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).


go-billy has path traversal vulnerabilities

CVE-2026-44973 / GHSA-qw64-3x98-g7q2

More information

Details

Impact

Multiple path traversal issues exist across different components of go-billy. Insufficient path sanitization and boundary enforcement may allow crafted paths (e.g., using ..) to escape intended base directories.

While go-billy was not originally designed to provide a strong security boundary, some of these issues were inconsistent across some of the built-in implementations. This results in scenarios where applications relying on go-billy for some level of isolation may inadvertently expose access to unintended filesystem locations.

The osfs.ChrootOS implementation is notably affected by this vulnerability and is now deprecated in v5, removed at v6. Users are recommended to move on to osfs.BoundOS instead: osfs.New(path, WithBoundOS()).

Users requiring stronger security boundary enforcement are recommended to upgrade to v6, where the osfs implementation are backed by the traversal-resistant primitive os.Root.

Patches

Users should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-billy version.

Credits

Thanks to @​faran66 and @​vnykmshr for finding and separately reporting this issue privately to the go-git project. 🙇

Severity

  • CVSS Score: 8.1 / 10 (High)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).


go-billy: Lack of depth and cycle detection in symlink resolution may lead to infinite loops and resource exhaustion

CVE-2026-44740 / GHSA-m3xc-h892-ggx6 / GO-2026-5490

More information

Details

Impact

Multiple components may improperly handle crafted or malformed input, resulting in panics, infinite loops, uncontrolled recursion, or excessive resource consumption.

These issues arise from insufficient validation and missing safety mechanisms such as cycle detection, recursion limits, or defensive handling of unexpected states when processing untrusted repository data and filesystem structures.

Patches

Users should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-billy version.

Credits

Thanks to @​faran66 for finding and reporting this issue privately to the go-git project. 🙇

Severity

  • CVSS Score: 6.5 / 10 (Medium)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


go-billy has path traversal vulnerabilities

CVE-2026-44973 / GHSA-qw64-3x98-g7q2 / GO-2026-5597

More information

Details

Impact

Multiple path traversal issues exist across different components of go-billy. Insufficient path sanitization and boundary enforcement may allow crafted paths (e.g., using ..) to escape intended base directories.

While go-billy was not originally designed to provide a strong security boundary, some of these issues were inconsistent across some of the built-in implementations. This results in scenarios where applications relying on go-billy for some level of isolation may inadvertently expose access to unintended filesystem locations.

The osfs.ChrootOS implementation is notably affected by this vulnerability and is now deprecated in v5, removed at v6. Users are recommended to move on to osfs.BoundOS instead: osfs.New(path, WithBoundOS()).

Users requiring stronger security boundary enforcement are recommended to upgrade to v6, where the osfs implementation are backed by the traversal-resistant primitive os.Root.

Patches

Users should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-billy version.

Credits

Thanks to @​faran66 and @​vnykmshr for finding and separately reporting this issue privately to the go-git project. 🙇

Severity

  • CVSS Score: 8.1 / 10 (High)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


Go-billy: Symlink resolution lack of cycle detection leads to infinite loop in github.com/go-git/go-billy

CVE-2026-44740 / GHSA-m3xc-h892-ggx6 / GO-2026-5490

More information

Details

Go-billy: Symlink resolution lack of cycle detection leads to infinite loop in github.com/go-git/go-billy

Severity

Unknown

References

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).


Go-billy has path traversal vulnerabilities in github.com/go-git/go-billy

CVE-2026-44973 / GHSA-qw64-3x98-g7q2 / GO-2026-5597

More information

Details

Go-billy has path traversal vulnerabilities in github.com/go-git/go-billy

Severity

Unknown

References

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).


Release Notes

go-git/go-billy (github.com/go-git/go-billy/v5)

v5.9.0

Compare Source

What's Changed

Full Changelog: go-git/go-billy@v5.8.0...v5.9.0

v5.8.0

Compare Source

What's Changed

Full Changelog: go-git/go-billy@v5.7.0...v5.8.0

v5.7.0

Compare Source

What's Changed

Full Changelog: go-git/go-billy@v5.6.2...v5.7.0


Configuration

📅 Schedule: (UTC)

  • Branch creation
    • At any time (no schedule defined)
  • Automerge
    • At any time (no schedule defined)

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

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


  • If you want to rebase/retry this PR, check this box

This PR has been generated by Mend Renovate CLI.

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ℹ️ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

  • 1 additional dependency was updated

Details:

Package Change
golang.org/x/exp v0.0.0-20260312153236-7ab1446f8b90 -> v0.0.0-20260410095643-746e56fc9e2f
File name: internal/tools/go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

  • 1 additional dependency was updated

Details:

Package Change
golang.org/x/exp v0.0.0-20260312153236-7ab1446f8b90 -> v0.0.0-20260410095643-746e56fc9e2f

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@renovate-update-app
renovate-update-app Bot force-pushed the renovate/go-github.com-go-git-go-billy-v5-vulnerability branch 2 times, most recently from 04d4819 to 308e92e Compare October 25, 2026 08:38
@renovate-update-app
renovate-update-app Bot force-pushed the renovate/go-github.com-go-git-go-billy-v5-vulnerability branch from 308e92e to 3b66d2e Compare October 26, 2026 08:46

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