CVE-2026-91994
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductSemaphore
PublishedSep 15, 2026
First seenSep 15, 2026
Weakness typeCWE-862Missing authorization
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| semaphoreui semaphore | v ≤ 2.19.12 | — |
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