CVE-2026-11422: fallo de gravedad alta en shd101wyy Markdown Preview Enhanced
Markdown Preview Enhanced 0.8.x Code Injection via WaveDrom Rendering
Publicada el · Actualizada el
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 8.4epss 0.2%
probabilidad de explotación
0.2%top 95% de las CVE
explotación observada
noninguna fuente lo reporta
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.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
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CVE-2026-50733HIGHMarkdown Preview Enhanced Arbitrary Code Execution via WaveDrom eval()EPSS 0.6%CVE-2026-49493HIGHMarkdown Preview Enhanced Arbitrary Code Execution via Bitfield interpretJS()EPSS 0.6%CVE-2026-49492HIGHMarkdown Preview Enhanced OS Command Injection in External File and Link OpeningEPSS 0.5%
Referencias
https://github.com/shd101wyy/crossnote/commit/5588ca2121c3da43fe331575dc5cf4ef347b91eehttps://github.com/shd101wyy/vscode-markdown-preview-enhanced/commit/dcd80281c986293b93d9f1af34ced64dcb230c77https://github.com/shd101wyy/vscode-markdown-preview-enhanced/issues/2315https://www.vulncheck.com/advisories/markdown-preview-enhanced-x-code-injection-via-wavedrom-rendering