Gitea Actions Vulnerability in Gitea by Gitea
CVE-2026-104626

8.8HIGH

Key Information:

Vendor

Gitea

Status
Gitea
Vendor
CVE Published:
6 October 2026

What is CVE-2026-104626?

A security issue exists in Gitea that enables a user with privileges to open a fork pull request to manipulate workflow content within a Gitea Actions run pending approval. When a subsequent run in the associated concurrency group cancels a job that is already blocked, the status of the run turns terminal, albeit still awaiting approval. If a maintainer approves this run later, Gitea inadvertently allows the execution of potentially harmful workflow code by reverting the job to a pre-execution state, making it claimable by any matching runner. The risk arises from the combination of maintainer approval, enabled Actions, and the presence of a compatible runner that accepts jobs from the repository.

Affected Version(s)

Gitea 0 <= 1.27.3

References

https://github.com/go-gitea/gitea/security/advisories/GHS...
vendor-advisory
https://github.com/go-gitea/gitea/pull/39399
patch
https://blog.gitea.com/release-of-28.0.0/
release-notes

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

https://github.com/opensec-intelligence
https://github.com/mayank-jangid-moon
https://github.com/Kushalkhemka
https://github.com/skigeek16
https://github.com/nithissh7
https://github.com/kewmine
https://github.com/bircni
https://github.com/silverwind
.