High7.5Red Hat Linux

High [CVE-2026-33939] Denial of Service via malformed decorator syntax in template compilation

This high-severity Red Hat Linux advisory covers CVE-2026-33939 affecting Red Hat OpenShift Dev Spaces 3.27, Logging Subsystem for Red Hat OpenShift, Red Hat Enterprise Linux 8.

CVE-2026-33939 Published Mar 27, 2026

CVE-2026-33939

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Denial of Service via malformed decorator syntax in template compilation. Red Hat rates this important (CVSS 7.5).

Weakness: CWE-248. Affected package(s): cluster-observability-operator/logging-console-plugin-pf4-rhel9:1782839279, cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996, cluster-observability-operator/logging-console-plugin-pf5-rhel9:1782840539, devspaces/code-rhel9:1776744110.

Resolved in Red Hat advisory RHSA-2026:34342 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat OpenShift Dev Spaces 3.27; Logging Subsystem for Red Hat OpenShift; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.

Affected versions

cluster-observability-operator/logging-console-plugin-pf4-rhel9:1782839279
cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996
cluster-observability-operator/logging-console-plugin-pf5-rhel9:1782840539
devspaces/code-rhel9:1776744110

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

Fixed versions

RHSA-2026:34342

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-2026:34342 (`sudo dnf update` / `yum update`).

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

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