Vulnerability Description
Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.19 and from 2.19.0-alpha3 until 2.19.5-beta5, ProjectMiddleware and GetProjectOrGlobalRoleBySlug allow a project manager to use POST /api/project/{id}/roles to create a custom manager role with permission bitmask 15, overriding the built-in manager permissions and granting CanUpdateProject and CanManageProjectUsers owner capabilities. This issue is fixed in versions 2.18.19 and 2.19.5-beta5.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/semaphoreui/semaphore/commit/1c4bb65df114962134f8829d4a036671
- https://github.com/semaphoreui/semaphore/commit/bb2a4e1f08c8023e618f8dd6eaca7355
- https://github.com/semaphoreui/semaphore/releases/tag/v2.18.19
- https://github.com/semaphoreui/semaphore/releases/tag/v2.19.5-beta5
- https://github.com/semaphoreui/semaphore/security/advisories/GHSA-cxvf-gvfq-36w2
- https://github.com/semaphoreui/semaphore/security/advisories/GHSA-cxvf-gvfq-36w2
FAQ
What is CVE-2026-73293?
CVE-2026-73293 is a vulnerability with a CVSS score of 8.8 (HIGH). Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.19 and from 2.19.0-alpha3 until 2.19.5-beta5, ProjectMiddleware and GetProjectOrGlobalRoleBySlug allow a project manager to us...
How severe is CVE-2026-73293?
CVE-2026-73293 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-73293?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.