CVE-2026-33276

XSS in Unified Search via Unescaped Host/Service Names

State: Published
Severity: 8.6 High
Published: Mar 31, 2026
Updated: Mar 31, 2026
Reserved: Mar 23, 2026

Description

Stored cross-site scripting (XSS) in Checkmk 2.5.0 (beta) before 2.5.0b2 allows authenticated users with permission to create hosts or services to execute arbitrary JavaScript in the browsers of other users performing searches in the Unified Search feature.

Scores

CVSS	Score	Vector	Source
4.0	8.6 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/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	2.5.0b1 to before 2.5.0b2Affected

References

https://checkmk.com/werk/19525

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