CVE-2026-58370
Woodpecker before 3.15.0 matches the ApprovalAllowedUsers bypass list against pipeline.Author.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.72%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Woodpecker before 3.15.0 matches the ApprovalAllowedUsers bypass list against pipeline.Author. For the GitLab forge driver, pipeline.Author is populated from the git commit author name (commit.author.name) carried in the webhook payload, which is attacker-controlled and not verified by GitLab. A user who can open a merge request from a fork can set the commit author name to match an entry in ApprovalAllowedUsers, causing needsApproval to return false so the pipeline runs without the required approval. This defeats the fork-approval security boundary and allows execution of attacker-controlled pipeline steps on a Woodpecker agent and exfiltration of CI secrets exposed to the run. Other built-in forge drivers (Gitea, Forgejo, GitHub, Bitbucket) derive pipeline.Author from the forge-validated sender/actor identity and are not affected.
- CVSS 4.0
- 9.2 CRITICALCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.72% probability · 52th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-290
- Source
- disclosure@vulncheck.com
References
- https://github.com/woodpecker-ci/woodpecker/commit/98faae778c953678944996c89ed99307d2f16a3d
- https://github.com/woodpecker-ci/woodpecker/pull/6653
- https://github.com/woodpecker-ci/woodpecker/releases/tag/v3.15.0
- https://www.vulncheck.com/advisories/woodpecker-gitlab-approval-gate-bypass-via-spoofable-commit-author-name
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.