CVE-2026-3466CWE-79

Cross-site scripting in dashlet title

High · published April 7, 2026

CVSS v4.0
8.5
EPSS
0%
Percentile
21.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.5 · HIGH
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
EPSS
0.00298 · 21.4th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-04-07T12:08Z
EPSS history
Timeline
  • 07 APR 12:08Z
    Cross-site scripting in dashlet title
    cvelistv5