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Check MKにおけるクロスサイトスクリプティングの脆弱性
Title Check MKにおけるクロスサイトスクリプティングの脆弱性
Summary

Checkmkのバージョン2.5.0p5、2.4.0p31、2.3.0p48、およびすべての2.2.0バージョンにおいて、グローバル設定変更ログに保存されたクロスサイトスクリプティング（XSS）の脆弱性が存在します。グローバル設定を変更できる管理者が、変更履歴メッセージに悪意のあるHTMLやJavaScriptを保存でき、そのスクリプトが他のユーザーが「変更を有効化」ページや監査ログを閲覧した際に実行される可能性があります。

Possible impacts ・当該ソフトウェアが扱う情報の一部が外部に漏れる可能性があります。 ・当該ソフトウェアが扱う情報の一部が書き換えられる可能性があります。 ・当該ソフトウェアは停止しません。 
Solution

ベンダ情報を参照して適切な対策を実施してください。

Publication Date June 8, 2026, midnight
Registration Date June 9, 2026, 2:12 p.m.
Last Update June 9, 2026, 2:12 p.m.
CVSS3.0 : 警告
Score 4.8
Vector CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Affected System
Check MK
Check MK 2.2.0
Check MK 2.3.0
Check MK 2.4.0
Check MK 2.5.0
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
Change Log
No Changed Details Date of change
1 [2026年06月09日]
  掲載		 June 9, 2026, 2:12 p.m.
NVD Vulnerability Information
CVE-2026-8078
Summary

Stored cross-site scripting in the global settings change log in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can change global settings to store malicious HTML or JavaScript in changelog messages that executes in other users' browsers when they view the Activate Changes page or Audit log.

Publication Date June 8, 2026, 10:16 p.m.
Registration Date June 9, 2026, 4:14 a.m.
Last Update June 9, 2026, 12:53 a.m.
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:checkmk:checkmk:2.2.0:-:*:*:*:*:*:*
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cpe:2.3:a:checkmk:checkmk:2.3.0:b3:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:b4:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:b5:*:*:*:*:*:*
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cpe:2.3:a:checkmk:checkmk:2.3.0:p13:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:p14:*:*:*:*:*:*
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cpe:2.3:a:checkmk:checkmk:2.4.0:p17:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p18:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p19:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p2:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p20:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p21:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p22:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p23:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p24:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p25:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p26:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p27:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p28:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p29:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p3:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p30:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p4:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p5:*:*:*:*:*:*
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cpe:2.3:a:checkmk:checkmk:2.4.0:p8:*:*:*:*:*:*
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cpe:2.3:a:checkmk:checkmk:2.5.0:b2:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.5.0:b3:*:*:*:*:*:*
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cpe:2.3:a:checkmk:checkmk:2.5.0:p2:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.5.0:p3:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.5.0:p4:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List