Vulnerability Description
Semaphore UI through 2.19.12 exempts GET and HEAD requests from project resource permission checks in GetMustCanMiddleware. Attackers with guest or task_runner roles can read all project environments including plaintext secrets, credentials, and passwords via GET requests to the environment endpoint.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/semaphoreui/semaphore
- https://github.com/semaphoreui/semaphore/blob/v2.19.12/api/projects/project.go#L
- https://github.com/semaphoreui/semaphore/blob/v2.19.12/api/router.go#L308-L329
- https://github.com/semaphoreui/semaphore/issues/4150
- https://www.vulncheck.com/advisories/semaphore-ui-through-2.19.12-missing-author
FAQ
What is CVE-2026-91994?
CVE-2026-91994 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Semaphore UI through 2.19.12 exempts GET and HEAD requests from project resource permission checks in GetMustCanMiddleware. Attackers with guest or task_runner roles can read all project environments ...
How severe is CVE-2026-91994?
CVE-2026-91994 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-91994?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.