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High8.1Red Hat Linux

High [CVE-2026-42338] Cross-site scripting via improper HTML escaping of untrusted input

This high-severity Red Hat Linux advisory covers CVE-2026-42338 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Ansible Automation Platform 2.6, Red Hat Developer Hub 1.10.

CVE-2026-42338 Published May 12, 2026
CVE-2026-42338
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

Cross-site scripting via improper HTML escaping of untrusted input. Red Hat rates this important (CVSS 8.1).

Weakness: CWE-79. Affected package(s): openshift-service-mesh/kiali-ossmc-rhel9:1782201851, openshift-service-mesh/kiali-ossmc-rhel9:1782231869, nodejs24, nodejs22, openshift-service-mesh/kiali-ossmc-rhel9:1782201894, openshift-service-mesh/kiali-ossmc-rhel9:1782201696.

Resolved in Red Hat advisory RHSA-2026:33160 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Ansible Automation Platform 2.6; Red Hat Developer Hub 1.10; Red Hat Developer Hub 1.9; and 23 more.

Affected versions
  • openshift-service-mesh/kiali-ossmc-rhel9:1782201851
  • openshift-service-mesh/kiali-ossmc-rhel9:1782231869
  • nodejs24-1:24.18.0-1.el10_2
  • nodejs22-1:22.23.1-2.el10_2
  • openshift-service-mesh/kiali-ossmc-rhel9:1782201894
  • openshift-service-mesh/kiali-ossmc-rhel9:1782201696
  • openshift-service-mesh/kiali-ossmc-rhel8:1781937133
  • rhdh/rhdh-hub-rhel9:1782761244
  • ansible-automation-platform-tech-preview/mcp-server-rhel9:1782721130
  • openshift-service-mesh/kiali-rhel9:1782201537
  • openshift-service-mesh/kiali-rhel9:1782201812
  • openshift-service-mesh/kiali-rhel9:1782201833

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • RHSA-2026:33160

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Update the affected package(s) to the fixed version shipped in RHSA-2026:33160 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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