High [CVE-2026-40478] Server-Side Template Injection via expression execution bypass
This high-severity Red Hat Linux advisory covers CVE-2026-40478 affecting Red Hat OpenShift Dev Spaces 3.28, Red Hat Fuse 7, Red Hat Single Sign-On 7.
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Summary
Server-Side Template Injection via expression execution bypass. Red Hat rates this important (CVSS 8.5).
Weakness: CWE-917. Affected package(s): devspaces/openvsx-rhel9:1779528224, devspaces/pluginregistry-rhel9:1779359423.
Resolved in Red Hat advisory RHSA-2026:21772 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat OpenShift Dev Spaces 3.28; Red Hat Fuse 7; Red Hat Single Sign-On 7; Red Hat JBoss Enterprise Application Platform Expansion Pack.
- devspaces/openvsx-rhel9:1779528224
- devspaces/pluginregistry-rhel9:1779359423
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:21772
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:21772 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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