Vulnerability Description
A pre-authentication denial of service vulnerability exists in React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints, which can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| React | >= 19.0.0, < 19.0.2 | |
| Vercel | Next.Js | >= 13.3.0, < 14.2.35 |
Related Weaknesses (CWE)
References
- https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-Vendor Advisory
- https://www.facebook.com/security/advisories/cve-2025-55184Vendor Advisory
- https://github.com/KingHacker353/CVE-2025-55184
FAQ
What is CVE-2025-55184?
CVE-2025-55184 is a vulnerability with a CVSS score of 7.5 (HIGH). A pre-authentication denial of service vulnerability exists in React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server...
How severe is CVE-2025-55184?
CVE-2025-55184 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-55184?
Check the references section above for vendor advisories and patch information. Affected products include: Facebook React, Vercel Next.Js.