CVE-2026-73294

CriticalCVSS 9.9/10Last modified Oct 24, 2026

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.

Metrics

CVSS 3.1 9.9/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-78 CWE-88

Affected software

Vendor	Product	Versions
semaphoreui	semaphore	< 2.18.17; >= 2.19.0-alpha3, < 2.19.5-beta2

References

Timeline

Published: Aug 12, 2026
Last modified: Oct 24, 2026
NVD status: Deferred

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