CVE-2026-78847

CVSS 9.8 (critical) · published 2026-09-21

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.

Weakness: CWE-95

Source: NVD CVE-2026-78847

References

• 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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