CVE-2026-91994 Semaphore UI through 2.19.12 Missing Authorization on GET and HEAD Requests

Semaphore UI through 2.19.12 exempts GET and HEAD requests from project resource permission checks in GetMustCanMiddleware. Attackers with guest or taskrunner roles can read all project environments including plaintext secrets, credentials, and passwords via GET requests to the environment endpoi...

CVE-2026-91994

Semaphore UI through 2.19.12 contains a missing authorization vulnerability in the GetMustCanMiddleware component. The middleware exempts GET and HEAD requests from project resource permission checks, allowing attackers with guest or task_runner roles to read all project environments—including pl...