CVE-2026-3466 HIGH

CVE-2026-3466: Cross-site scripting in dashlet title

Vendor Checkmk Gmbh
Product Checkmk
Weakness CWE-79 · XSS
Published April 7, 2026
Last update April 22, 2026
View on NVD All CVEs

CVSS base score

8.5/10
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:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N

What the vulnerability does

01Description

Insufficient sanitization of dashboard dashlet title links in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0 allows an attacker with dashboard creation privileges to perform stored cross-site scripting (XSS) attacks by tricking a victim into clicking a crafted dashlet title link on a shared dashboard.

Key dates

02Disclosure timeline

April 7, 2026 CVE published
April 22, 2026 Record updated