CVE-2026-2859
Medium · 4.3CVSS
4.3
EPSS
0.3%
Published
Mar 13, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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