Answer in brief
CVE-2026-49492 records a High severity (CVSS 8.6) vulnerability in Markdown Preview Enhanced OS Command Injection in External File and Link Opening. The current sources do not mark it as known exploited. The current feed maps shd101wyy/Markdown Preview Enhanced (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps shd101wyy/Markdown Preview Enhanced (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| shd101wyy/Markdown Preview Enhancedgeneric | >=0 <0.8.28 | 0.8.28 |
Published upstream
Jun 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 28, 2026
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.
Quoted source text, attributed separately from HOL analysis.