Vulnerability Description
Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.17 and 2.19.5-beta2, repository git_url handling passes an attacker-controlled --upload-pack option to CmdGitClient.GetLastRemoteCommitHash through POST /api/project/{id}/repositories and scheduled commit-hash polling, allowing a project Manager or Owner to execute arbitrary OS commands in the Semaphore server process. This issue is fixed in versions 2.18.17 and 2.19.5-beta2.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/semaphoreui/semaphore/commit/7e8a9434bd81b82cf42220151c74801e
- https://github.com/semaphoreui/semaphore/commit/a7a7a33a64aea382a0726b3722856f29
- https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p
- https://github.com/semaphoreui/semaphore/tree/v2.18.17
- https://github.com/semaphoreui/semaphore/tree/v2.19.5-beta2
- https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p
FAQ
What is CVE-2026-73294?
CVE-2026-73294 is a vulnerability with a CVSS score of 9.9 (CRITICAL). Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.17 and 2.19.5-beta2, repository git_url handling passes an attacker-controlled --upload-pack option to CmdGitClient.GetLastRemo...
How severe is CVE-2026-73294?
CVE-2026-73294 has been rated CRITICAL with a CVSS base score of 9.9/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-73294?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.