Detections
Analytics
CVE-2025-55183
medium
Description
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.
References
https://cyberscoop.com/react2shell-vulnerability-fallout-spreads/
https://www.theregister.com/2025/12/15/react2shell_flaw_china_iran/
https://www.databreachtoday.com/nation-state-cybercrime-exploits-tied-to-react2shell-a-30285
https://www.theregister.com/2025/12/12/new_react_secretleak_bugs/
https://thehackernews.com/2025/12/new-react-rsc-vulnerabilities-enable.html