CVE-2026-7186

Fix stored XSS in URL dashboard widget via dangerous URI schemes

State: Published
Severity: 8.5 High
Published: Jun 8, 2026
Updated: Jun 8, 2026
Reserved: Apr 27, 2026

Description

Stored cross-site scripting in the URL dashboard widget in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows a user with dashboard editing permissions to store a URL with a dangerous URI scheme such as javascript: that executes scripts in other users' browsers when they view the dashboard.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N	Checkmk

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
CheckmkCheckmk GmbH	2.5.0 to before 2.5.0p5Affected 2.4.0 to before 2.4.0p31Affected 2.3.0 to before 2.3.0p48Affected 2.2.0Affected

References

https://checkmk.com/werk/17991vendor-advisory

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