CVE-2026-24097

| EUVD-2026-11782 MEDIUM
2026-03-13 Checkmk
4.3
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

3
EUVD ID Assigned
Mar 13, 2026 - 10:00 euvd
EUVD-2026-11782
Analysis Generated
Mar 13, 2026 - 10:00 vuln.today
CVE Published
Mar 13, 2026 - 09:40 nvd
MEDIUM 4.3

Tags

Information Disclosure Checkmk

Description

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 authenticated users to enumerate existing hosts by observing different HTTP response codes in agent-receiver/register_existing endpoint, which could lead to information disclosure.

Analysis

Checkmk contains an improper permission enforcement vulnerability in the agent-receiver/register_existing endpoint that allows authenticated users to enumerate existing hosts by observing differential HTTP response codes, enabling information disclosure. This affects Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and the end-of-life 2.2.0 branch. …

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Remediation

Within 30 days: Identify affected systems running Checkmk and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

22
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +22
POC: 0

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CVE-2026-24097 vulnerability details – vuln.today
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