CVE-2026-49492
Markdown Preview Enhanced OS Command Injection in External File and Link Opening
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-78 |
| Vendor | shd101wyy |
| Product | markdown preview enhanced |
| Published | Jun 5, 2026 |
| Last Updated | Jun 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
shd101wyy / Markdown Preview Enhanced
0 < 0.8.28
References
Credits
byte16384