CVE-2026-103670: Gitea

High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days.

When a Gitea Actions run was inserted, older runs in the same workflow-level concurrency group were cancelled without checking whether the new run still needed approval. Because fork pull request runs are inserted under the base repository, a user who can open a pull request from a fork could cancel trusted in-progress runs that share a concurrency group with `cancel-in-progress` enabled, without approval and without running any code. On self-hosted runners this can interrupt deployments and leave partial state behind.

Affected products

• Gitea Gitea: up to and including 1.27.3

Published 2026-10-06. Last modified 2026-10-07.