CVE-2026-73293

Published: Aug 12, 2026Modified: Sep 9, 2026Deferred

8.8

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 2.8 / Impact: 5.9

Source: security-advisories@github.com (Secondary)

Description

Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.19 and from 2.19.0-alpha3 until 2.19.5-beta5, ProjectMiddleware and GetProjectOrGlobalRoleBySlug allow a project manager to use POST /api/project/{id}/roles to create a custom manager role with permission bitmask 15, overriding the built-in manager permissions and granting CanUpdateProject and CanManageProjectUsers owner capabilities. This issue is fixed in versions 2.18.19 and 2.19.5-beta5.

Related CWEs

Improper Privilege Management

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

References (6)

https://github.com/semaphoreui/semaphore/commit/1c4bb65df114962134f8829d4a03667106a01a68

Source: security-advisories@github.com

https://github.com/semaphoreui/semaphore/commit/bb2a4e1f08c8023e618f8dd6eaca73554f2c33bb

Source: security-advisories@github.com

https://github.com/semaphoreui/semaphore/releases/tag/v2.18.19

Source: security-advisories@github.com

https://github.com/semaphoreui/semaphore/releases/tag/v2.19.5-beta5

Source: security-advisories@github.com

https://github.com/semaphoreui/semaphore/security/advisories/GHSA-cxvf-gvfq-36w2

Source: security-advisories@github.com

https://github.com/semaphoreui/semaphore/security/advisories/GHSA-cxvf-gvfq-36w2

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.