Meta React Server Components Remote Code Execution Vulnerability
Critical CVSS 10.0 Listed in CISA KEV
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.
In-depth triage · Auto channel
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- Meta:React Server Components
- :
- :
Sources
- CISA KEV DATABASE
- NVD DATABASE
Original Links
- https://nvd.nist.gov/vuln/detail/CVE-2025-55182 advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog kev
- https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components reference
- https://github.com/vercel-labs/fix-react2shell-next?tab=readme-ov-file reference
- https://www.facebook.com/security/advisories/cve-2025-55182 Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/12/03/4 Mailing List
- https://news.ycombinator.com/item?id=46136026 Issue Tracking
- https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/ Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182 US Government Resource
Timeline
- kev_added CISA KEV
- kev_ingest CISA KEV
- nvd_ingest NVD