CVE-2026-78847
CRITICAL
CVSS 9.8
Published: 2026-09-21
Modified: 2026-09-22
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Threat Intelligence Pending
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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.
Quick Facts
| CVE ID | CVE-2026-78847 |
| CVSS Score | 9.8 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2026-09-21 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |