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Solution
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Workaround
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Fri, 21 Aug 2026 19:45:00 +0000
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| First Time appeared |
Bluewave-labs
Bluewave-labs checkmate |
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| Vendors & Products |
Bluewave-labs
Bluewave-labs checkmate |
Fri, 21 Aug 2026 18:30:00 +0000
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| Metrics |
ssvc
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Fri, 21 Aug 2026 18:15:00 +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. From 3.5.1 until 3.9.2, an authenticated admin or superadmin can set matchMethod to regex and place a malicious expression in the expectedValue field for advanced HTTP monitor matching. server/src/api/validation/monitorValidation.ts accepts the expression, and server/src/service/network/AdvancedMatcher.ts synchronously evaluates it against an attacker-controlled HTTP response body on the Node.js main event loop without a timeout or worker isolation, allowing catastrophic backtracking to freeze API endpoints, monitor checks, and WebSocket connections for all users. This issue is fixed in version 3.9.2. | |
| Title | Checkmate: Regular Expression Denial of Service (ReDoS) via User-Controlled Regex in Monitor Advanced Matching | |
| Weaknesses | CWE-1333 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-21T18:07:11.885Z
Reserved: 2026-08-04T21:48:08.612Z
Link: CVE-2026-70656
Updated: 2026-08-21T18:07:06.659Z
Status : Received
Published: 2026-08-21T18:16:50.277
Modified: 2026-08-21T19:17:50.190
Link: CVE-2026-70656
No data.
OpenCVE Enrichment
Updated: 2026-08-21T20:00:13Z