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CVE-2025-39663

8.5 high SSVC exploitation: poc Analyzed
NVD · CVE.org

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).

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 8.5 · checkmkNVD modified 2026-10-19 13:10

Affected (CPE criteria) 53

  • cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:-:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p1:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p10:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p11:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p12:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p13:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p14:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p15:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p16:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p17:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p18:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p19:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p2:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p20:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p21:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p22:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p23:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p24:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p25:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p26:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p27:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p28:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p29:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p3:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p30:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p31:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p32:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p33:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p34:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p35:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p36:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p37:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p38:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p4:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p5:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p6:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p7:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p8:*:*:*:*:*:*
  • cpe:2.3:a:checkmk:checkmk:2.3.0:p9:*:*:*:*:*:*
  • and 13 more

References 4