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Case File

CVE-2021-23639

CRITICAL · CVSS 9.8 EPSS 5.33% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-12-10 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. Public exploit code or proof-of-concept references have been detected in its references. It may be remotely exploitable.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
remote code execution code execution
GitHub PoC Links
github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-23639
Severity
CRITICAL
CVSS
9.8
EPSS
5.33%

Original NVD Description

The package md-to-pdf before 5.0.0 are vulnerable to Remote Code Execution (RCE) due to utilizing the library gray-matter to parse front matter content, without disabling the JS engine.