CVE-2026-49492
High · 8.8CVSS
8.8
EPSS
0.5%
Published
Jun 5, 2026
CISA due date
—
The record
Markdown Preview Enhanced before 0.8.28 opens external files and links from the preview through a shell and does not validate untrusted inputs taken from the markdown document - the diagram filename attribute, imported file paths, and the latex_engine code-chunk attribute. On Windows, a crafted markdown document can inject operating system commands that execute when the document is previewed. Fixed in 0.8.28 by passing these inputs as literal arguments instead of through a shell and validating them before use.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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