CVE-2026-15576
UNKNOWN
NVD
CVSS Score
0
Severity
UNKNOWN
Published
Aug 21, 2026
Vendor
unknown
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.