What’s Vulnerable › Vulnerabilities

CVE-2026-78847

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-21 · updated 2026-09-22
• Weakness: CWE-95

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://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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