Unrated
Unauthenticated Host Enumeration via Observable Response Discrepancy on Deploy Agent Endpoint
CVE-2026-2859
First seen on SecPulse
Original description The description as published by the source.
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.
References
- advisory github.com
- advisory nvd.nist.gov
- web checkmk.com