CVE-2025-55183

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.

• react.devhttps://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components
• www.facebook.comhttps://www.facebook.com/security/advisories/cve-2025-55183

No related CVEs by CWE or product.