CVE-2025-55184
December 11, 2025
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.
Affected Packages
react-server-dom-turbopack (NPM):
Affected version(s) >=19.1.0 <19.1.4Fix Suggestion:
Update to version 19.1.4react-server-dom-parcel (NPM):
Affected version(s) >=19.2.0 <19.2.2Fix Suggestion:
Update to version 19.2.2react-server-dom-parcel (NPM):
Affected version(s) >=19.1.0 <19.1.4Fix Suggestion:
Update to version 19.1.4react-server-dom-turbopack (NPM):
Affected version(s) >=19.2.0 <19.2.2Fix Suggestion:
Update to version 19.2.2react-server-dom-turbopack (NPM):
Affected version(s) >=19.0.0 <19.0.2Fix Suggestion:
Update to version 19.0.2next (NPM):
Affected version(s) >=16.0.0-canary.0 <16.0.7Fix Suggestion:
Update to version 16.0.7react-server-dom-turbopack (NPM):
Affected version(s) >=19.0.0 <19.0.3Fix Suggestion:
Update to version 19.0.3next (NPM):
Affected version(s) >=14.3.0-canary.77 <15.0.5Fix Suggestion:
Update to version 15.0.5react-server-dom-webpack (NPM):
Affected version(s) >=19.0.0 <19.0.2Fix Suggestion:
Update to version 19.0.2next (NPM):
Affected version(s) >=15.1.0 <15.1.9Fix Suggestion:
Update to version 15.1.9react-server-dom-parcel (NPM):
Affected version(s) >=19.1.0 <19.1.3Fix Suggestion:
Update to version 19.1.3react-server-dom-webpack (NPM):
Affected version(s) >=19.0.0 <19.0.3Fix Suggestion:
Update to version 19.0.3react-server-dom-webpack (NPM):
Affected version(s) >=19.2.0 <19.2.3Fix Suggestion:
Update to version 19.2.3next (NPM):
Affected version(s) >=15.4.0-canary.0 <15.4.8Fix Suggestion:
Update to version 15.4.8next (NPM):
Affected version(s) >=15.2.0-canary.0 <15.2.6Fix Suggestion:
Update to version 15.2.6next (NPM):
Affected version(s) >=15.3.0-canary.0 <15.3.6Fix Suggestion:
Update to version 15.3.6react-server-dom-webpack (NPM):
Affected version(s) >=19.2.0 <19.2.2Fix Suggestion:
Update to version 19.2.2next (NPM):
Affected version(s) >=15.5.0 <15.5.7Fix Suggestion:
Update to version 15.5.7react-server-dom-turbopack (NPM):
Affected version(s) >=19.2.0 <19.2.3Fix Suggestion:
Update to version 19.2.3react-server-dom-turbopack (NPM):
Affected version(s) >=19.1.0 <19.1.3Fix Suggestion:
Update to version 19.1.3react-server-dom-webpack (NPM):
Affected version(s) >=19.1.0 <19.1.4Fix Suggestion:
Update to version 19.1.4react-server-dom-webpack (NPM):
Affected version(s) >=19.1.0 <19.1.3Fix Suggestion:
Update to version 19.1.3react-server-dom-parcel (NPM):
Affected version(s) >=19.2.0 <19.2.3Fix Suggestion:
Update to version 19.2.3Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
EPSS
Base Score:
23.57
