CVE-2025-55184
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,...
- Published
- Dec 11, 2025
- Updated
- Dec 15, 2025
- Assigning CNA
- Meta
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HHigh · next 30 days
- Percentile
- 99.3%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
9- CVE-2025-55184-POC-ExpolitExploit
Professional-grade Denial of Service (DoS) exploitation framework for CVE-2025-55184 targeting React Server Components. Features 8 attack modes, WAF bypass, and 10+ payload variants for authorized security testing and bug bounty hunting.
- CVE-2025-55184_TestingScanner
Python script for Testing CVE-2025-55184
- react-server-cve-labResearch
Responsible use
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