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Unrated severityNVD Advisory· Published Mar 13, 2026· Updated Mar 13, 2026

Authenticated Host Enumeration via Observable Response Discrepancy on Agent Register Existing Endpoint

CVE-2026-24097

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2
  • Checkmk/Checkmkllm-fuzzy2 versions
    2.2.0, 2.3.0 before 2.3.0p43, 2.4.0 before 2.4.0p23+ 1 more
    • (no CPE)range: 2.2.0, 2.3.0 before 2.3.0p43, 2.4.0 before 2.4.0p23
    • (no CPE)range: 2.4.0

Patches

Vulnerability mechanics

References

1

News mentions

0

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