Privilege escalation in Step-security Harden-runner
CVE-2025-32955
Harden-Runner is a CI/CD security agent that works like an EDR for GitHub Actions runners. Versions from 0.12.0 to before 2.12.0 are vulnerable to `disable-sudo` bypass. Harden-Runner includes a policy option `disable-sudo` to prevent the…
EPSS: 0.000 (2.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H.
Affected products
- Step-security Harden-runner — versions >= 0.12.0, < 2.12.0
Weakness classification (CWE)
References
- https://github.com/step-security/harden-runner/security/advisories/GHSA-mxr3-8whj-j74r (x_refsource_CONFIRM)
- https://github.com/step-security/harden-runner/commit/0634a2670c59f64b4a01f0f96f84700a4088b9f0 (x_refsource_MISC)
- https://github.com/step-security/harden-runner/releases/tag/v2.12.0 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-32955?
- CVE-2025-32955 is a medium-severity vulnerability in Step-security Harden-runner, classified under Privilege Chaining. CVSS score: 6.0/10. Published 2025-04-21.
- How severe is CVE-2025-32955?
- Medium severity. CVSS v3 base score is 6.0 out of 10.