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.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 15 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 15 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Semaphoreui
Semaphoreui semaphore
Vendors & Products Semaphoreui
Semaphoreui semaphore

Tue, 15 Sep 2026 11:45:00 +0000

Type Values Removed Values Added
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.
Title Semaphore UI through 2.19.12 Missing Authorization on GET and HEAD Requests
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 7.1, 'vector': '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'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-15T12:36:59.210Z

Reserved: 2026-09-15T11:11:13.312Z

Link: CVE-2026-91994

cve-icon Vulnrichment

Updated: 2026-09-15T12:36:51.431Z

cve-icon NVD

Status : Received

Published: 2026-09-15T12:17:54.793

Modified: 2026-09-15T13:16:47.380

Link: CVE-2026-91994

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-15T13:00:15Z

Weaknesses