Privilege escalation in Gitea Act_runner
CVE-2026-58053
Gitea act_runner with the Docker backend (through act 0.262.0) passes a workflow's container.options string to the Docker job container's HostConfig and, when configured with privileged: false, forces only the Privileged flag off while mer…
Vulnerability class: Privilege Escalation
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Gitea Act_runner — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (exploit, third-party-advisory)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-58053?
- CVE-2026-58053 is a critical-severity vulnerability in Gitea Act_runner, classified under Improper Privilege Management. CVSS score: 9.9/10. Published 2026-06-28.
- How severe is CVE-2026-58053?
- Critical severity. CVSS v3 base score is 9.9 out of 10.