CVE-2026-3466: 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…

PriorityP427medium5.4CVSS 3.1

AVNACLPRLUIRSCCLILAN

EPSS

0.23%

13.5th percentile

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.

Affected

8 ranges

Vendor	Product	Version range	Fixed in
checkmk	checkmk	—	—
checkmk	checkmk	—	—
checkmk	checkmk	—	—
checkmk	checkmk	—	—
checkmk_gmbh	checkmk	—	—
checkmk_gmbh	checkmk	>= 2.3.0 < 2.3.0p46	2.3.0p46
checkmk_gmbh	checkmk	>= 2.4.0 < 2.4.0p25	2.4.0p25
checkmk_gmbh	checkmk	>= 2.5.0b1 < 2.5.0	2.5.0

CVSS provenance

nvdv3.15.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

nvdv4.08.5HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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