CVE-2026-91994
MEDIUM
NVD
CVSS Score
6.5
Severity
MEDIUM
Published
Sep 15, 2026
Vendor
unknown
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.
References
- https://github.com/semaphoreui/semaphore
- https://github.com/semaphoreui/semaphore/blob/v2.19.12/api/projects/project.go#L89-L106
- 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-authorization-on-get-and-head-requests