An information leak vulnerability exists in specific configurations of 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. A specifically crafted HTTP request sent to a vulnerable Server Function may unsafely return the source code of any Server Function. Exploitation requires the existence of a Server Function which explicitly or implicitly exposes a stringified argument.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| React | 19.0.0 (including) | 19.0.2 (excluding) | |
| React | 19.1.0 (including) | 19.1.3 (excluding) | |
| React | 19.2.0 (including) | 19.2.2 (excluding) |