{"id":"CVE-2025-55183","aliases":["GHSA-925w-6v3x-g4j4"],"url":"https://o3.security/vulnerability/CVE-2025-55183","summary":"Source Code Exposure Vulnerability in React Server Components","details":"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.","published":"2025-12-11T20:16:00.460Z","modified":"2026-08-27T09:37:41.374457Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":4,"affectedPackages":[{"ecosystem":"npm","name":"react-server-dom-parcel","fixedVersion":"19.0.2"},{"ecosystem":"npm","name":"react-server-dom-turbopack","fixedVersion":"19.0.2"},{"ecosystem":"npm","name":"react-server-dom-webpack","fixedVersion":"19.0.2"},{"ecosystem":"npm","name":"react-server-dom-parcel","fixedVersion":"19.1.3"},{"ecosystem":"npm","name":"react-server-dom-parcel","fixedVersion":"19.2.2"},{"ecosystem":"npm","name":"react-server-dom-turbopack","fixedVersion":"19.1.3"},{"ecosystem":"npm","name":"react-server-dom-turbopack","fixedVersion":"19.2.2"},{"ecosystem":"npm","name":"react-server-dom-webpack","fixedVersion":"19.1.3"},{"ecosystem":"npm","name":"react-server-dom-webpack","fixedVersion":"19.2.2"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://www.facebook.com/security/advisories/cve-2025-55183"},{"type":"EVIDENCE","url":"https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T09:37:41.374457Z"}}