CVE intelligence and bounded remediation

CVE-2024-38859 — Checkmk Checkmk security vulnerability

Medium CVSS 6.1

XSS in the view page with the SLA column configured in Checkmk versions prior to 2.3.0p14, 2.2.0p33, 2.1.0p47 and 2.0.0 (EOL) allowed malicious users to execute arbitrary scripts by injecting HTML elements into the SLA column title. These scripts could be executed when the view page was cloned by other users.

Severity
Medium
CVSS
6.1 (3.1)
Published
2024-08-26
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-80, CWE-79

Affected products

  • checkmk / checkmk / 2.0.0
  • checkmk / checkmk / 2.1.0

Showing 2 representative product identities from 119 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Cross-site scripting and unsafe browser output

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Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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