Vulnerability · Published Oct 6, 2026 · Assigned by Gitea

CVE-2026-104626Gitea fork workflow job revival through later approval

High 8.8

In plain English

A high-severity security flaw in Gitea from Gitea. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.3%top 73.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A user who can open a fork pull request can place workflow content with a shared run-level concurrency group into a Gitea Actions run that is awaiting approval. When a later run in that group cancels the blocked job, the run becomes terminal while still marked as needing approval. If a maintainer later approves the run, Gitea passed the already-cancelled job back through concurrency preparation, set it to waiting, and made it claimable by a matching runner, executing fork-controlled workflow code. Exploitation requires the maintainer's later approval action, Actions to be enabled, and a runner that accepts the repository's jobs.

Affected products (as reported)

Vendor	Product	Versions
Gitea	Gitea	0 – through 1.27.3

Weakness: CWE-841 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

GitHub Security Advisory GHSA-93pj-3x56-5gc2 vendor-advisory
Fix: go-gitea/gitea pull request #39399 patch
Gitea 28.0.0 release announcement release-notes
go-gitea/gitea v28.0.0 release release-notes