{"id":"CVE-2026-91994","title":"Semaphore UI through 2.19.12 exempts GET and HEAD requests from project resource permission checks in GetMustCanMiddleware","summary":"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, credenti…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-862"],"vendor":"semaphoreui","product":"semaphore","affected":["semaphore <= 2.19.12"],"published":"2026-09-15","updated":"2026-09-24","sourceUpdated":"2026-09-24T20:28:01.780","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-91994","references":[{"url":"https://github.com/semaphoreui/semaphore","label":"disclosure@vulncheck.com"},{"url":"https://github.com/semaphoreui/semaphore/blob/v2.19.12/api/projects/project.go#L89-L106","label":"disclosure@vulncheck.com"},{"url":"https://github.com/semaphoreui/semaphore/blob/v2.19.12/api/router.go#L308-L329","label":"disclosure@vulncheck.com"},{"url":"https://github.com/semaphoreui/semaphore/issues/4150","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/semaphore-ui-through-2.19.12-missing-authorization-on-get-and-head-requests","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00415,"epssPercentile":0.33039,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-15T12:36:45.634709Z"},"ingestedAt":"2026-09-15T12:36:50.173Z","slug":"CVE-2026-91994","body":"## Overview\n\nSemaphore 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":203605,"id":"CVE-2026-91994","ts":1789479488138,"field":"exploit_available","old":"false","new":"true"}]}