CVE-2026-78847

critical

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.

References

https://github.com/jonschlinkert/gray-matter/issues/182

https://github.com/jonschlinkert/gray-matter/issues/131

https://github.com/jonschlinkert/gray-matter/issues/112

https://blog.checo.cc/en/posts/Security/1

Details

Source: Mitre, NVD

Published: 2026-09-21

Updated: 2026-09-22

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H