CVE-2026-15937: CWE-295: Improper Certificate Validation in Checkmk GmbH Checkmk
Improper certificate validation in Checkmk <2.5.0p10 allows a relay and a push agent that share the same UUID to reuse each other's mTLS certificate to authenticate against agent receiver endpoints in either direction, because the endpoints do not verify that the certificate was issued by their own root certificate.
CVE-2026-15937: CWE-295: Improper Certificate Validation in Checkmk GmbH Checkmk
Description
Improper certificate validation in Checkmk <2.5.0p10 allows a relay and a push agent that share the same UUID to reuse each other's mTLS certificate to authenticate against agent receiver endpoints in either direction, because the endpoints do not verify that the certificate was issued by their own root certificate.
CVSS v4.0
Score 5.3medium
Affected software
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Checkmk
- Date Reserved
- 2026-07-16T08:40:57.255Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a9a8354acd9273b494e27ec
Added to database: 09/04/2026, 08:37:40 UTC
Last updated: 09/04/2026, 09:52:26 UTC
Views: 6
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