CVE WatchOct 13, 2026

CVE-2026-104626

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 i

CVSS

8.8

High

EPSS

0.3%

p25

KEV

—

Exploit Today

0-100

Published: Oct 6, 2026 · Last modified: Oct 13, 2026 · CWE-841

EPSS · 30d

0.2%EPSS · 30 days0.3%

2026-10-072026-10-14

Technical 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.

Official references

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