CVE-2026-49493: fallo de gravedad alta en shd101wyy Markdown Preview Enhanced
Markdown Preview Enhanced Arbitrary Code Execution via Bitfield interpretJS()
Publicada el · Actualizada el
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 8.6epss 0.6%
probabilidad de explotación
0.6%top 54% de las CVE
explotación observada
noninguna fuente lo reporta
Markdown Preview Enhanced before 0.8.28 parses Bitfield fenced code blocks with interpretJS(), which evaluates the block content as code via vm.runInNewContext(), allowing arbitrary code execution. A crafted markdown document containing a malicious bitfield code block executes attacker-controlled code on the server side when the document is rendered or exported. Fixed in 0.8.28 by parsing bitfield register definitions with JSON5.parse(), since they are purely data.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Productos afectados
shd101wyy · Markdown Preview EnhancedCVEs relacionadas — shd101wyy Markdown Preview Enhanced
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