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@0xjgv 0xjgv commented Jan 6, 2026

Update Next.js from vulnerable versions to 15.5.9 to remediate the critical RCE vulnerability (CVSS 10.0) in React Server Components.

Affected packages:

  • examples/example_next: 15.5.6 → 15.5.9
  • packages/cli/templates/template_next_pro: 15.0.3 → 15.5.9

Also fixes @types/react version mismatch in template_next_pro (was 18.x with React 19, now correctly 19.x).

References:

Update Next.js from vulnerable versions to 15.5.9 to remediate the
critical RCE vulnerability (CVSS 10.0) in React Server Components.

Affected packages:
- examples/example_next: 15.5.6 → 15.5.9
- packages/cli/templates/template_next_pro: 15.0.3 → 15.5.9

Also fixes @types/react version mismatch in template_next_pro
(was 18.x with React 19, now correctly 19.x).

References:
- https://nextjs.org/blog/CVE-2025-66478
- https://nvd.nist.gov/vuln/detail/CVE-2025-66478
@fgatti675 fgatti675 merged commit 986cc93 into main Jan 7, 2026
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Thank you Juan!!

@0xjgv 0xjgv deleted the fix/cve-2025-66478-nextjs-security branch January 7, 2026 20:34
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3 participants