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Advisories

Checkmate through 3.11.0 Missing Authorization on Maintenance Window, Notification, and Check Deletion Routes

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severity
high
date
Affecting

  • Checkmate <= 3.11.0

CWE
  • CWE-862 Missing Authorization
CVSS
7.1
CVSS V4 Vector
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
Credit
George Chen
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.

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