High [CVE-2026-12856] Command Injection vulnerability in the JavaDoc hover provider of the vscode-java extension
This high-severity Red Hat Linux advisory covers CVE-2026-12856.
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Summary
Command Injection vulnerability in the JavaDoc hover provider of the vscode-java extension. Red Hat rates this important (CVSS 8.8).
Weakness: CWE-88. Red Hat lists fixing advisory RHSA-2026:36820 with package devspaces/pluginregistry-rhel9:1782989367.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- devspaces/pluginregistry-rhel9:1782989367
- RHSA-2026:36820
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- To mitigate this issue, users should avoid opening or interacting with untrusted Java projects or files within Red Hat OpenShift Dev Spaces. Exercise caution and refrain from clicking on unfamiliar links presented in JavaDoc hover popups, particularly when working with code from unverified sources. Disabling the `vscode-java` extension when not actively engaged in Java development can further reduce exposure, though this will impact Java-related functionality.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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