High 7.1Published Sep 3, 2026

CVE-2026-85390Checkmate through 3.11.0 Missing Authorization on Maintenance Window, Notification, and Check Deletion Routes

Updated under an hour ago (Oct 27, 2026, 3:00 PM ET)

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It affects bluewave-labs Checkmate. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for bluewave-labs Checkmate

Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Weakness (CWE): CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Sep 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

bluewave-labs Checkmate bluewave_labs:checkmate (from the name)	through 3.11.0	CNA record

References

References

https://github.com/bluewave-labs/Checkmate/issues/3916	issue-tracking
https://github.com/bluewave-labs/Checkmate	product
https://github.com/bluewave-labs/Checkmate/blob/v3.11.0/server/src/api/routes/maintenanceWindowRoutes.ts	technical-description
https://github.com/bluewave-labs/Checkmate/blob/v3.11.0/server/src/api/routes/notificationRoutes.ts	technical-description
https://github.com/bluewave-labs/Checkmate/blob/v3.11.0/server/src/api/routes/checkRoutes.ts	technical-description
https://www.vulncheck.com/advisories/checkmate-through-3.11.0-missing-authorization-on-maintenance-window-notification-and-check-deletion-routes	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.