Vulnerability in Gitea
CVE-2026-103670
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- 88ee5874-cf24-4952-aea0-31affedb7ff2 (vendor-advisory)
- 88ee5874-cf24-4952-aea0-31affedb7ff2 (patch)
- 88ee5874-cf24-4952-aea0-31affedb7ff2 (release-notes)
- 88ee5874-cf24-4952-aea0-31affedb7ff2 (release-notes)
Frequently asked questions
- What is CVE-2026-103670?
- CVE-2026-103670 is a high-severity vulnerability in Gitea, classified under Improper Locking. CVSS score: 7.5/10. Published 2026-10-06.
- How severe is CVE-2026-103670?
- High severity. CVSS v3 base score is 7.5 out of 10.