Home/CVE/A pre-authentication denial of service vulnerability exists in React Server Components versions 19.0.0, 19.0.1 19.1.0, 1
CVE

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, 1

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.

HIGH · CVSS 7.5 EPSS 0.41239
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  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 3% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-502Deserialization of Untrusted Data
▤

Affected Products & Versions

12
facebook react>= 19.0.0 and < 19.0.2
facebook react>= 19.1.0 and < 19.1.3
facebook react>= 19.2.0 and < 19.2.2
vercel next.js>= 13.3.0 and < 14.2.35
vercel next.js>= 15.0.0 and < 15.0.7
vercel next.js>= 15.1.0 and < 15.1.11
vercel next.js>= 15.2.0 and < 15.2.8
vercel next.js>= 15.3.0 and < 15.3.8
▤

Affected Packages

3
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
npm react-server-dom-parcel HIGH fixed in 19.0.2
npm react-server-dom-turbopack HIGH fixed in 19.0.2
npm react-server-dom-webpack HIGH fixed in 19.0.2
⚠

Public Exploits & PoCs

1
nucleiReact Server Components - Denial of Servicehigh
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve-assign@fb.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Dec 2025 · 08:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
oracle-cpuoracle-cpu-Oracle-Database-Oracle-REST-Data-Services-9456--CVE-2025-55184
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-componentsVendor Advisory
https://www.facebook.com/security/advisories/cve-2025-55184Vendor Advisory
https://github.com/KingHacker353/CVE-2025-55184
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