CVE-2026-91994CWE-862broken-access-control

CVE-2026-91994

Medium · published September 15, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
34.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00415 · 34.7th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-09-15T16:17Z
References (5)
https://github.com/semaphoreui/semaphore · [email protected]https://github.com/semaphoreui/semaphore/blob/v2.19.12/api/projects/project.go#L89-L106 · [email protected]https://github.com/semaphoreui/semaphore/blob/v2.19.12/api/router.go#L308-L329 · [email protected]https://github.com/semaphoreui/semaphore/issues/4150 · [email protected]https://www.vulncheck.com/advisories/semaphore-ui-through-2.19.12-missing-authorization-on-get-and-head-requests · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 11:35Z
    Semaphore UI through 2.19.12 Missing Authorization on GET and HEAD Requests
    cvelistv5