Medium severityNVD Advisory· Published Aug 21, 2026· Updated Aug 21, 2026
CVE-2026-15576
CVE-2026-15576
Description
Improper authentication in the agent receiver of Checkmk <2.5.0p10 allows an unauthenticated remote attacker to bypass mutual TLS client certificate verification of relay endpoints by supplying a fixed placeholder identity in the request URL, resulting in limited impact on integrity and availability. Only the Cloud, Ultimate and Ultimate MT editions are affected, as other editions do not expose relay endpoints.
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Affected products
1Patches
Vulnerability mechanics
References
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