High severity7.1NVD Advisory· Published Sep 3, 2026
CVE-2026-85390
CVE-2026-85390
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1- Range: <=3.11.0
Patches
Vulnerability mechanics
References
5- github.com/bluewave-labs/Checkmate/blob/v3.11.0/server/src/api/routes/checkRoutes.tsnvd
- github.com/bluewave-labs/Checkmate/blob/v3.11.0/server/src/api/routes/maintenanceWindowRoutes.tsnvd
- github.com/bluewave-labs/Checkmate/blob/v3.11.0/server/src/api/routes/notificationRoutes.tsnvd
- github.com/bluewave-labs/Checkmate/issues/3916nvd
- www.vulncheck.com/advisories/checkmate-through-3.11.0-missing-authorization-on-maintenance-window-notification-and-check-deletion-routesnvd
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