CVE-2026-78847CWE-95

CVE-2026-78847

Critical · published September 22, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
47.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00596 · 47.8th percentile
Weakness
CWE-95 · Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
Published
2026-09-22T02:16Z
References (5)
https://blog.checo.cc/en/posts/Security/1 · [email protected]https://github.com/jonschlinkert/gray-matter/issues/112 · [email protected]https://github.com/jonschlinkert/gray-matter/issues/131 · [email protected]https://github.com/jonschlinkert/gray-matter/issues/182 · [email protected]https://github.com/jonschlinkert/gray-matter/issues/182 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 23 SEP 03:48Z
    EPSS moved — → 0%
    epss
  • 21 SEP 00:00Z
    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…
    cvelistv5