CVE-2026-91994
mediumSemaphore UI through 2.19.12 exempts GET and HEAD requests from project resource permission checks in GetMustCanMiddleware.
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
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-09-15 12:17
Modified: 2026-09-24 20:28
NVD status: Awaiting Analysis
Last synced 2 days ago
Verified against the source API 2026-10-27 06:53 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/semaphoreui/semaphore disclosure@vulncheck.com
- https://github.com/semaphoreui/semaphore/blob/v2.19.12/api/projects/project.go#L89-L106 disclosure@vulncheck.com
- https://github.com/semaphoreui/semaphore/blob/v2.19.12/api/router.go#L308-L329 disclosure@vulncheck.com
- https://github.com/semaphoreui/semaphore/issues/4150 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/semaphore-ui-through-2.19.12-missing-authorization-on... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:53 UTC · record ↗