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Vulnerability record · CVE-2026-78847 · published 21 September 2026

CVE-2026-78847: An issue in gray-matter All versions (verified on 4.0.3) allows the JavaScript engine in lib/engines.js using …

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.

9.8 CVSS 3.1 Critical EPSS 0.87% · top 43.0% CWE-95 · CWE-95 Deferred
9.8CVSS 3.1 base score
0.87%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
22 Sep 2026Last modified by 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.

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

References

LinkTags
https://blog.checo.cc/en/posts/Security/1
https://github.com/jonschlinkert/gray-matter/issues/112
https://github.com/jonschlinkert/gray-matter/issues/131
https://github.com/jonschlinkert/gray-matter/issues/182
https://github.com/jonschlinkert/gray-matter/issues/182

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Source: NIST National Vulnerability Database (record CVE-2026-78847), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.