Vulnerability Details CVE-2026-2859
Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 (EOL) allows unauthenticated users to enumerate existing hosts by observing different HTTP response codes in deploy_agent endpoint, which could lead to information disclosure.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 15.8%
CVSS Severity
CVSS v3 Score 4.3
References