{"id":"CVE-2026-73293","state":"PUBLISHED","title":"Semaphore UI: Manager-to-owner privilege escalation via custom-role slug collision","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.","publishedAt":"2026-08-12T15:45:22.145Z","updatedAt":"2026-08-12T16:56:45.324Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["semaphoreui semaphore"],"affected":[{"vendor":"semaphoreui","product":"semaphore","versions":[{"version":"< 2.18.19","status":"affected"},{"version":">= 2.19.0-alpha3, < 2.19.5-beta5","status":"affected"}]}],"references":["https://github.com/semaphoreui/semaphore/security/advisories/GHSA-cxvf-gvfq-36w2","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"],"weaknesses":["CWE-269"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73293.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73293","state":"PUBLISHED","datePublished":"2026-08-12T15:45:22.145Z","dateUpdated":"2026-08-12T16:56:45.324Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-11T19:42:11.450Z"},"containers":{"cna":{"title":"Semaphore UI: Manager-to-owner privilege escalation via custom-role slug collision","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"semaphoreui","product":"semaphore","versions":[{"version":"< 2.18.19","status":"affected"},{"version":">= 2.19.0-alpha3, < 2.19.5-beta5","status":"affected"}]}],"references":[{"url":"https://github.com/semaphoreui/semaphore/security/advisories/GHSA-cxvf-gvfq-36w2","name":"https://github.com/semaphoreui/semaphore/security/advisories/GHSA-cxvf-gvfq-36w2","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/semaphoreui/semaphore/commit/1c4bb65df114962134f8829d4a03667106a01a68","name":"https://github.com/semaphoreui/semaphore/commit/1c4bb65df114962134f8829d4a03667106a01a68","tags":["x_refsource_MISC"]},{"url":"https://github.com/semaphoreui/semaphore/commit/bb2a4e1f08c8023e618f8dd6eaca73554f2c33bb","name":"https://github.com/semaphoreui/semaphore/commit/bb2a4e1f08c8023e618f8dd6eaca73554f2c33bb","tags":["x_refsource_MISC"]},{"url":"https://github.com/semaphoreui/semaphore/releases/tag/v2.18.19","name":"https://github.com/semaphoreui/semaphore/releases/tag/v2.18.19","tags":["x_refsource_MISC"]},{"url":"https://github.com/semaphoreui/semaphore/releases/tag/v2.19.5-beta5","name":"https://github.com/semaphoreui/semaphore/releases/tag/v2.19.5-beta5","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-269","lang":"en","description":"CWE-269: Improper Privilege Management","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-12T15:45:22.145Z"},"source":{"advisory":"GHSA-cxvf-gvfq-36w2","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/semaphoreui/semaphore/security/advisories/GHSA-cxvf-gvfq-36w2","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-12T16:56:05.968430Z","id":"CVE-2026-73293","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-12T16:56:45.324Z"}}]}}}