CVE-2026-12856 — Vscode-java: vscode: command injection vulnerability in the javadoc hover provider of the vscode-java extension
A flaw was found in the vscode-java extension, which provides Java language support for Visual Studio Code. The extension incorrectly trusts all Markdown content in JavaDoc hove…
Published: 2026-06-29 · CVSS: 8.8 · CVSS 3.1
A flaw was found in the vscode-java extension, which provides Java language support for Visual Studio Code. The extension incorrectly trusts all Markdown content in JavaDoc hovers, allowing a malicious Java file to include hidden commands. If a user clicks a specially crafted link within a JavaDoc hover popup, an attacker can execute arbitrary VS Code commands, which can lead to full system compromise in trusted workspaces.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7