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// vulnerability record
cached · NVD via COSMOS syncCVE-2025-55182
CRITICALKEVpublished 2025-12-03 16:15 UTC · 8 months ago · modified 2026-06-17 09:41 UTC
10.0
CVSS / 10
// description
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.
// required action (CISA KEV)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
added 2025-12-05 00:00 UTC
// weaknesses (CWE)
- CWE-502
// references (6)
- https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components
- https://www.facebook.com/security/advisories/cve-2025-55182
- http://www.openwall.com/lists/oss-security/2025/12/03/4
- https://news.ycombinator.com/item?id=46136026
- https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/