Vulnerability Monitor

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CVE-2025-39663

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).

Published

2025-10-30T11:15:32.400

Last Modified

2025-12-03T20:06:16.960

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 8.4 (HIGH)

Weaknesses
  • Type: Secondary
    CWE-80
  • Type: Primary
    CWE-79
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application checkmk checkmk < 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.3.0 Yes
Application checkmk checkmk 2.4.0 Yes
Application checkmk checkmk 2.4.0 Yes
Application checkmk checkmk 2.4.0 Yes
Application checkmk checkmk 2.4.0 Yes
Application checkmk checkmk 2.4.0 Yes
Application checkmk checkmk 2.4.0 Yes
Application checkmk checkmk 2.4.0 Yes
Application checkmk checkmk 2.4.0 Yes
Application checkmk checkmk 2.4.0 Yes
Application checkmk checkmk 2.4.0 Yes
Application checkmk checkmk 2.4.0 Yes
Application checkmk checkmk 2.4.0 Yes
Application checkmk checkmk 2.4.0 Yes
References