CVE-2025-32955
Harden-Runner Evasion of 'disable-sudo' policy
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
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 GitHub Actions runner user from using sudo. This is implemented by removing the runner user from the sudoers file. However, this control can be bypassed as the runner user, being part of the docker group, can interact with the Docker daemon to launch privileged containers or access the host filesystem. This allows the attacker to regain root access or restore the sudoers file, effectively bypassing the restriction. This issue has been patched in version 2.12.0.
Timeline
ID reserved
By GitHub_M
- 7 days later
· 7 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium6.0 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H |
| NVDNVD · Deferred | 3.1 | Medium6.0 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.23% · top 87% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.0.
Weakness
Affected products
- affected >= 0.12.0, < 2.12.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- GitHub Actionsstep-security/harden-runnerGHSA-mxr3-8whj-j74r (opens in a new tab)
References (3)
- https://github.com/step-security/harden-runner/security/advisories/GHSA-mxr3-8whj-j74r (opens in a new tab)x_refsource_CONFIRM
- https://github.com/step-security/harden-runner/commit/0634a2670c59f64b4a01f0f96f84700a4088b9f0 (opens in a new tab)x_refsource_MISC
- https://github.com/step-security/harden-runner/releases/tag/v2.12.0 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-mxr3-8whj-j74r (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2025-32955)Record last updated .