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.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
| Link | Providers |
|---|---|
| https://checkmk.com/werk/18993 |
|
History
Fri, 13 Mar 2026 10:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Authenticated Host Enumeration via Observable Response Discrepancy on Agent Register Existing Endpoint | |
| First Time appeared |
Checkmk
Checkmk checkmk |
|
| Weaknesses | CWE-204 | |
| CPEs | cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:* |
|
| Vendors & Products |
Checkmk
Checkmk checkmk |
|
| References |
| |
| Metrics |
cvssV4_0
|
Projects
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MITRE
Status: PUBLISHED
Assigner: Checkmk
Published:
Updated: 2026-03-13T09:40:05.075Z
Reserved: 2026-01-21T14:39:24.128Z
Link: CVE-2026-24097
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
No data.
Weaknesses