CVE-2026-11422
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk5th percentile - higher than 5% of all known CVEs
Summary
Markdown Preview Enhanced 0.8.x with crossnote engine 0.9.28 has a code injection vulnerability in the WaveDrom rendering pipeline. Attackers can embed malicious content in a wavedrom fenced code block, leading to arbitrary JavaScript execution in the VS Code webview context and arbitrary file writes on the local filesystem.
Risk Assessment
An attacker can remotely execute arbitrary JavaScript in the VS Code context, potentially taking control of the editor and the victim's filesystem.
Recommendation
Update Markdown Preview Enhanced to version 0.8.10 or later, which contains the fix.
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Original NVD description (English source)
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.

