Description
Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack. The vulnerabilities are triggered by sending specially crafted HTTP requests to Server Function endpoints, and could lead to server crashes, out-of-memory exceptions or excessive CPU usage; depending on the vulnerable code path being exercised, the application configuration and application code. Strongly consider upgrading to the latest package versions to reduce risk and prevent availability issues in applications using React Server Components.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- Meta / react-server-dom-parcel19.2.0 – 19.2.4
- Meta / react-server-dom-parcel19.0.0 – 19.0.4
- Meta / react-server-dom-parcel19.1.0 – 19.1.5
- Meta / react-server-dom-turbopack19.1.0 – 19.1.5
- Meta / react-server-dom-turbopack19.0.0 – 19.0.4
- Meta / react-server-dom-turbopack19.2.0 – 19.2.4
- Meta / react-server-dom-webpack19.0.0 – 19.0.4
- Meta / react-server-dom-webpack19.2.0 – 19.2.4
- Meta / react-server-dom-webpack19.1.0 – 19.1.5
References
- VENDOR_ADVISORYhttps://www.facebook.com/security/advisories/cve-2026-23864
Updated 6m ago · 2 sources