CVE-2026-91994

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 v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/semaphoreui/semaphore
https://github.com/semaphoreui/semaphore/blob/v2.19.12/api/projects/project.go#L89-L106
https://github.com/semaphoreui/semaphore/blob/v2.19.12/api/router.go#L308-L329
https://github.com/semaphoreui/semaphore/issues/4150
https://www.vulncheck.com/advisories/semaphore-ui-through-2.19.12-missing-authorization-on-get-and-head-requests

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-15 12:17

Updated : 2026-09-15 13:16

NVD link : CVE-2026-91994

Mitre link : CVE-2026-91994

CVE.ORG link : CVE-2026-91994

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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