CVE-2026-33276 HIGH

CVE-2026-33276: XSS in Unified Search via Unescaped Host/Service Names

Vendor Checkmk Gmbh
Product Checkmk
Weakness CWE-79 · XSS
Published March 31, 2026
Last update March 31, 2026
View on NVD All CVEs

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction —
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 31, 2026 CVE published
March 31, 2026 Record updated