CVE-2026-20915 (GCVE-0-2026-20915)

Vulnerability from cvelistv5 – Published: 2026-03-31 13:51 – Updated: 2026-03-31 17:15
VLAI?
Title
Stored cross-site scripting in Pending Changes sidebar
Summary
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.
Severity ?
8.5 (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
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0b1 , < 2.5.0b2 (semver)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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