{"id":"CVE-2026-85390","summary":"Checkmate through 3.11.0 Missing Authorization on Maintenance Window, Notification, and Check Deletion Routes","details":"Checkmate through 3.11.0 omits the isAllowed role guard middleware on maintenance-window, notification, and check-deletion routes, allowing read-only users to perform administrative actions. Attackers with user-role sessions can create arbitrary maintenance windows to silence alerts, modify notification channels, and delete monitor check history to erase incident evidence.","modified":"2026-09-04T03:47:30.255917791Z","published":"2026-09-03T18:54:23.866Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85390.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-862"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85390.json"},{"type":"PACKAGE","url":"https://github.com/bluewave-labs/Checkmate"},{"type":"ARTICLE","url":"https://github.com/bluewave-labs/Checkmate/blob/v3.11.0/server/src/api/routes/checkRoutes.ts"},{"type":"ARTICLE","url":"https://github.com/bluewave-labs/Checkmate/blob/v3.11.0/server/src/api/routes/maintenanceWindowRoutes.ts"},{"type":"ARTICLE","url":"https://github.com/bluewave-labs/Checkmate/blob/v3.11.0/server/src/api/routes/notificationRoutes.ts"},{"type":"REPORT","url":"https://github.com/bluewave-labs/Checkmate/issues/3916"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85390"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/checkmate-through-3.11.0-missing-authorization-on-maintenance-window-notification-and-check-deletion-routes"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bluewave-labs/checkmate","events":[{"introduced":"0"},{"last_affected":"021f99e0beb2842bd8ea9d434d93ea50bb9e4aa4"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"3.11.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v3.11.0","v3.9.2","v3.9.1","v3.7.1","v3.6.1","v3.5.1","v3.5.0","v3.4.0","v3.3","v3.2.0","v3.1.8","v3.1.6","v3.1.5","v3.1.4","v3.1.3","v3.1.2","v3.1.1","v3.1","v3.1-beta","v2.3","v2.2","v2.1","v2.0.2","v2.0.1","v1.1.0","v1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-85390.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N"}]}