Stored cross-site scripting in Pending Changes sidebar_CVE-2026-20915

8.5 / 10

HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N

Description

Stored cross-site scripting (XSS) in Checkmk version 2.5.0 (beta) before 2.5.0b2 allows authenticated users with permission to create pending changes to inject malicious JavaScript into the Pending Changes sidebar, which will execute in the browsers of other users viewing the sidebar.

Basic Information

ID CVE-2026-20915

Source Checkmk

Published Mar 31, 2026 at 13:51

Modified Mar 31, 2026 at 17:15

Affected Product

Vendor Checkmk GmbH

Product Checkmk

Version 2.5.0b1

Affected Versions Checkmk GmbH Checkmk 2.5.0b1

CWE Classification

CWE-79

References

checkmk.com /werk/19526

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    "published": "2026-03-31T13:51:02.358Z",
    "modified": "2026-03-31T17:15:54.753Z",
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