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CVE-2026-11422

7.1
HIGHCVSS v3.1 Base Score

Markdown Preview Enhanced 0.8.x with crossnote engine 0.9.28 contains a code injection vulnerability in the WaveDrom rendering pipeline that allows attackers to execute arbitrary JavaScript by embedding malicious content in a wavedrom fenced code block within a crafted Markdown document. Attackers can exploit the unsanitized passing of wavedrom block content to window.eval() in the VS Code webview context to abuse the extension's message passing and invoke arbitrary file writes on the local filesystem.

Published: 6/5/2026
Modified: 6/5/2026
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Vulnerability Summary

CVSS v3 Score

7.1HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CWE Classification

Related Vulnerabilities

Same Weakness Type(CWE-95)

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Similar SeverityHIGH

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