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High8.2Vendor: MediumRed Hat Linux

High [CVE-2026-33747] Arbitrary file write and code execution via untrusted frontend

This high-severity Red Hat Linux advisory covers CVE-2026-33747 affecting openshift-service-mesh/istio-proxyv2-rhel9:1776240392, quay/quay-rhel9:1779922205, multicluster-engine/must-gather-rhel9:1782158798.

CVE-2026-33747 Published Mar 27, 2026
CVE-2026-33747
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

Arbitrary file write and code execution via untrusted frontend. Red Hat rates this moderate (CVSS 8.2).

Weakness: CWE-22. Affected package(s): openshift-service-mesh/istio-proxyv2-rhel9:1776240392, quay/quay-rhel9:1779922205, multicluster-engine/must-gather-rhel9:1782158798, openshift-service-mesh/istio-proxyv2-rhel9:1776291540, openshift-service-mesh/istio-proxyv2-rhel9:1776315466, oadp/oadp-mustgather-rhel9:1779770049.

Resolved in Red Hat advisory RHSA-2026:9453 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux.

Affected versions
  • openshift-service-mesh/istio-proxyv2-rhel9:1776240392
  • quay/quay-rhel9:1779922205
  • multicluster-engine/must-gather-rhel9:1782158798
  • openshift-service-mesh/istio-proxyv2-rhel9:1776291540
  • openshift-service-mesh/istio-proxyv2-rhel9:1776315466
  • oadp/oadp-mustgather-rhel9:1779770049
  • oadp/oadp-mustgather-rhel9:1779770057
  • rhtas/client-server-rhel9:1776339099

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

Fixed versions
  • RHSA-2026:9453

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-2026:9453 (`sudo dnf update` / `yum update`).

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

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