Summary
Meta React Server Components contains a remote code execution vulnerability that could allow unauthenticated remote code execution by exploiting a flaw in how React decodes payloads sent to React Server Function endpoints. Please note CVE-2025-66478 has been rejected, but it is associated with CVE-2025- 55182.
- Vendor
- Meta
- Product
- React Server Components
- Added to KEV
- Dec 5, 2025
- Remediation due
- Dec 12, 2025 (US federal deadline)
- Ransomware use
- Known
- EPSS
- 99.7% as of Nov 12
In the news
- No Asia-Pacific article names this CVE yet.
Linked
Actors named alongside it:
none
Incidents exploiting it:
- none recorded
References