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Vulnerability record · CVE-2026-73293 · published 12 August 2026

CVE-2026-73293: Improper privilege management vulnerability

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.

8.8 CVSS 3.1 High EPSS 0.57% · top 55.1% CWE-269 · Improper privilege management Deferred
8.8CVSS 3.1 base score
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
9 Sep 2026Last modified by NVD

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.

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

References

LinkTags
https://github.com/semaphoreui/semaphore/commit/1c4bb65df114962134f8829d4a03667106a01a68
https://github.com/semaphoreui/semaphore/commit/bb2a4e1f08c8023e618f8dd6eaca73554f2c33bb
https://github.com/semaphoreui/semaphore/releases/tag/v2.18.19
https://github.com/semaphoreui/semaphore/releases/tag/v2.19.5-beta5
https://github.com/semaphoreui/semaphore/security/advisories/GHSA-cxvf-gvfq-36w2
https://github.com/semaphoreui/semaphore/security/advisories/GHSA-cxvf-gvfq-36w2

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Source: NIST National Vulnerability Database (record CVE-2026-73293), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.