CVE-2026-33456: CWE-140: Improper Neutralization of Delimiters in Checkmk GmbH Checkmk
Livestatus injection in the notification test mode in Checkmk <2.5.0b4 and <2.4.0p26 allows an authenticated user with access to the notification test page to inject arbitrary Livestatus commands via a crafted service description.
AI Analysis
Technical Summary
This vulnerability involves Livestatus injection in Checkmk's notification test mode. Authenticated users with access to the notification test page can exploit improper delimiter neutralization to inject arbitrary Livestatus commands via a crafted service description. The affected versions are Checkmk prior to 2.5.0b4 and 2.4.0p26. The CVSS 4.0 base score is 5.1, indicating medium severity. No vendor advisory or patch information is currently available.
Potential Impact
An authenticated user with access to the notification test page can execute arbitrary Livestatus commands, potentially leading to unauthorized information disclosure or manipulation within the monitoring system. The impact is limited by the requirement for authenticated access with specific privileges and the medium CVSS score reflects this constrained risk.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the notification test page to trusted users only and monitor for suspicious activity related to Livestatus commands.
CVE-2026-33456: CWE-140: Improper Neutralization of Delimiters in Checkmk GmbH Checkmk
Description
Livestatus injection in the notification test mode in Checkmk <2.5.0b4 and <2.4.0p26 allows an authenticated user with access to the notification test page to inject arbitrary Livestatus commands via a crafted service description.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves Livestatus injection in Checkmk's notification test mode. Authenticated users with access to the notification test page can exploit improper delimiter neutralization to inject arbitrary Livestatus commands via a crafted service description. The affected versions are Checkmk prior to 2.5.0b4 and 2.4.0p26. The CVSS 4.0 base score is 5.1, indicating medium severity. No vendor advisory or patch information is currently available.
Potential Impact
An authenticated user with access to the notification test page can execute arbitrary Livestatus commands, potentially leading to unauthorized information disclosure or manipulation within the monitoring system. The impact is limited by the requirement for authenticated access with specific privileges and the medium CVSS score reflects this constrained risk.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the notification test page to trusted users only and monitor for suspicious activity related to Livestatus commands.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Checkmk
- Date Reserved
- 2026-03-20T10:30:13.353Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d8b9e71cc7ad14daa069b2
Added to database: 4/10/2026, 8:50:47 AM
Last enriched: 4/17/2026, 11:48:34 AM
Last updated: 5/25/2026, 6:47:34 AM
Views: 69
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