CVE-2025-39663 (GCVE-0-2025-39663)

Vulnerability from cvelistv5 – Published: 2025-10-30 10:43 – Updated: 2025-11-07 16:04
VLAI?
Title
Cross Site Scripting through compromised remote site
Summary
Cross-Site Scripting (XSS) vulnerability in Checkmk's distributed monitoring allows a compromised remote site to inject malicious HTML code into service outputs in the central site. Affecting Checkmk before 2.4.0p14, 2.3.0p39, 2.2.0 and 2.1.0 (eol).
Severity ?
8.5 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-80 - Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Assigner
References
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.4.0 , < 2.4.0p14 (semver)
Affected: 2.3.0 , < 2.3.0p39 (semver)
Affected: 2.2.0 (semver)
Affected: 2.1.0 (semver)
Create a notification for this product.
Credits
Lisa Gnedt (SBA Research)
Show details on NVD website
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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