CVE-2026-12856
Vscode-java: vscode: command injection vulnerability in the javadoc hover provider of the vscode-java extension
- State
- Published
- Severity
- 8.8 High
- Published
- Jun 29, 2026
- Updated
- Jul 15, 2026
- Reserved
- Jun 22, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | redhat |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | redhat-SADP |
Weaknesses
- CWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Affected Products
| Product | Versions |
|---|---|
Red Hat OpenShift Dev Spaces 3.29Red Hat |
|
References
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