{"id":"CVE-2026-73294","state":"PUBLISHED","title":"Semaphore U: OS Command Injection","description":"Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.17 and 2.19.5-beta2, repository git_url handling passes an attacker-controlled --upload-pack option to CmdGitClient.GetLastRemoteCommitHash through POST /api/project/{id}/repositories and scheduled commit-hash polling, allowing a project Manager or Owner to execute arbitrary OS commands in the Semaphore server process. This issue is fixed in versions 2.18.17 and 2.19.5-beta2.","publishedAt":"2026-08-12T15:55:00.560Z","updatedAt":"2026-08-12T16:03:38.426Z","severity":{"score":9.9,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["semaphoreui semaphore"],"affected":[{"vendor":"semaphoreui","product":"semaphore","versions":[{"version":"< 2.18.17","status":"affected"},{"version":">= 2.19.0-alpha3, < 2.19.5-beta2","status":"affected"}]}],"references":["https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p","https://github.com/semaphoreui/semaphore/commit/7e8a9434bd81b82cf42220151c74801ea97542d6","https://github.com/semaphoreui/semaphore/commit/a7a7a33a64aea382a0726b3722856f298663eacf","https://github.com/semaphoreui/semaphore/tree/v2.18.17","https://github.com/semaphoreui/semaphore/tree/v2.19.5-beta2"],"weaknesses":["CWE-78","CWE-88"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73294.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73294","state":"PUBLISHED","datePublished":"2026-08-12T15:55:00.560Z","dateUpdated":"2026-08-12T16:03:38.426Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-11T19:42:11.450Z"},"containers":{"cna":{"title":"Semaphore U: OS Command Injection","descriptions":[{"lang":"en","value":"Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.17 and 2.19.5-beta2, repository git_url handling passes an attacker-controlled --upload-pack option to CmdGitClient.GetLastRemoteCommitHash through POST /api/project/{id}/repositories and scheduled commit-hash polling, allowing a project Manager or Owner to execute arbitrary OS commands in the Semaphore server process. This issue is fixed in versions 2.18.17 and 2.19.5-beta2."}],"affected":[{"vendor":"semaphoreui","product":"semaphore","versions":[{"version":"< 2.18.17","status":"affected"},{"version":">= 2.19.0-alpha3, < 2.19.5-beta2","status":"affected"}]}],"references":[{"url":"https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p","name":"https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/semaphoreui/semaphore/commit/7e8a9434bd81b82cf42220151c74801ea97542d6","name":"https://github.com/semaphoreui/semaphore/commit/7e8a9434bd81b82cf42220151c74801ea97542d6","tags":["x_refsource_MISC"]},{"url":"https://github.com/semaphoreui/semaphore/commit/a7a7a33a64aea382a0726b3722856f298663eacf","name":"https://github.com/semaphoreui/semaphore/commit/a7a7a33a64aea382a0726b3722856f298663eacf","tags":["x_refsource_MISC"]},{"url":"https://github.com/semaphoreui/semaphore/tree/v2.18.17","name":"https://github.com/semaphoreui/semaphore/tree/v2.18.17","tags":["x_refsource_MISC"]},{"url":"https://github.com/semaphoreui/semaphore/tree/v2.19.5-beta2","name":"https://github.com/semaphoreui/semaphore/tree/v2.19.5-beta2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.9,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","lang":"en","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-88","lang":"en","description":"CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-12T15:55:00.560Z"},"source":{"advisory":"GHSA-xp7j-h7jc-4w8p","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-12T16:03:17.361594Z","id":"CVE-2026-73294","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":"2026-08-12T16:03:38.426Z"}}]}}}