Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations. In versions from 3.5.1 and prior, a mass assignment vulnerability in Checkmate's user profile update endpoint allows any authenticated user to escalate their privileges to superadmin, bypassing all role-based access controls. An attacker can modify their user role to gain complete administrative access to the application, including the ability to view all users, modify critical configurations, and access sensitive system data. At time of publication, there are no publicly available patches.
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History
Fri, 20 Mar 2026 22:15:00 +0000
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Fri, 20 Mar 2026 18:00:00 +0000
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| Description | Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations. In versions from 3.5.1 and prior, a mass assignment vulnerability in Checkmate's user profile update endpoint allows any authenticated user to escalate their privileges to superadmin, bypassing all role-based access controls. An attacker can modify their user role to gain complete administrative access to the application, including the ability to view all users, modify critical configurations, and access sensitive system data. At time of publication, there are no publicly available patches. | |
| Title | Mass Assignment Privilege Escalation in Checkmate | |
| Weaknesses | CWE-269 CWE-285 |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-03-20T21:27:29.683Z
Reserved: 2026-03-09T17:41:56.078Z
Link: CVE-2026-31836
Updated: 2026-03-20T21:27:22.786Z
Status : Received
Published: 2026-03-20T18:16:13.540
Modified: 2026-03-20T18:16:13.540
Link: CVE-2026-31836
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OpenCVE Enrichment
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