CVE-2026-73294
CriticalCVSS 9.9Summary
Semaphore UI before versions 2.18.17 and 2.19.5-beta2 improperly handles the git_url parameter in repositories, passing an attacker-controlled --upload-pack option to CmdGitClient.GetLastRemoteCommitHash. This allows a project Manager or Owner to execute arbitrary OS commands in the Semaphore server process.
Risk Assessment
A user with project Manager or Owner privileges can execute arbitrary commands on the Semaphore server, potentially leading to full system compromise.
Recommendation
Update Semaphore UI to version 2.18.17 or 2.19.5-beta2, which include the fix.
Original NVD description (English source)
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.