CVE-2026-33276

MediumCVSS 5.4

Published: 31/03/2026(UTC)Updated: 24/07/2026(UTC)Translated: 25/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.14%

4th percentile - higher than 4% of all known CVEs

Summary

Checkmk version 2.5.0 (beta) before 2.5.0b2 contains a stored XSS vulnerability. Authenticated users with permission to create hosts or services can inject arbitrary JavaScript that executes in other users' browsers during Unified Search.

Risk Assessment

An attacker can steal sessions or data from other users, compromising confidentiality and integrity.

Recommendation

Update Checkmk to version 2.5.0b2 or later which fixes this vulnerability.

Original NVD description (English source)

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.