Vulnerabilities CVE-2026-12856

CVE-2026-12856

High

Open

TLP:CLEAR

Vscode-java: vscode: command injection vulnerability in the javadoc hover provider of the vscode-java extension

NVD CVE.org

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Description

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.

Details

CVSS Score: 8.8
EPSS Score ⓘ: 0.29%

21.4th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Confidence: 90%
Published: Jun 29, 2026
Last Modified: Jul 15, 2026

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