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Status published
Low
CVE-2023-23549
DoS via long hostnames
Vulnerability Description
Improper Input Validation in Checkmk <2.2.0p15, <2.1.0p37, <=2.0.0p39 allows priviledged attackers to cause partial denial of service of the UI via too long hostnames.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
More from Checkmk GmbH
View All →CVE-2025-65000
Exposure of SSH Private Keys in Remote Alert Handlers (Linux) Rule
Low
2.3
CVE-2025-64999
Cross-site scripting in HTML logs of Synthetic Monitoring test services
High
7.3
CVE-2025-64998
Session hijacking via exposed session signing secret in distributed Checkmk setups
High
7.3
CVE-2025-64997
Insufficient permission validation when showing agent information
Medium
6.3
CVE-2025-64996
Overly broad file permissions in the mk_inotify plugin allows reading and manipulating the plugin's output
Medium
4.8
Affected Vendor
Checkmk GmbH
View all reports →Affected Software
Checkmk
Vulnerable Versions:
2.2.0, 2.1.0, 2.0.0
Timeline
Official Publish:
November 15th, 2023
Last Modified:
August 28th, 2024
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.