OCTOBER 7, 2026
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Case File

CVE-2026-78847

CRITICAL · CVSS 9.8 EPSS 0.60% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-21 · Last synced 2026-10-07

CyberRota Analysis

AI-Generated

The gray-matter library, specifically in its JavaScript engine implementation, is vulnerable to arbitrary code execution due to improper handling of front matter through the eval() function. This issue affects all versions of the library, including 4.0.3, and poses a significant risk to applications that utilize this library for parsing. Developers and organizations using gray-matter in their JavaScript projects should prioritize addressing this vulnerability to mitigate potential exploitation.

Public Exploit Signal

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

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

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

CVE
CVE-2026-78847
Severity
CRITICAL
CVSS
9.8
EPSS
0.60%
Java

Original NVD Description

An issue in gray-matter All versions (verified on 4.0.3) allows the JavaScript engine in lib/engines.js using eval() to parse front matter when language is js/javascript.This allows arbitrary code execution.