CVE-2026-8833

CVSS Score & Metrics

Base Score

5.4 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N                                    

Vulnerability Description

Improper neutralization of HTML-encoded characters in the URL validation function in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an authenticated user to bypass URL validation and inject malicious URLs such as javascript: URIs, resulting in cross-site scripting when another user interacts with the crafted link.

Vulnerability Details

Published Date

June 08, 2026

Last Modified

June 09, 2026

CWE ID

CWE-79

Source

NVD

Vendor

checkmk

Product

checkmk

External References

https://checkmk.com/werk/20002

CVSS Score & Metrics

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Vulnerability Details

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