{"id":"CVE-2025-55182","aliases":["GHSA-fv66-9v8q-g76r"],"url":"https://o3.security/vulnerability/CVE-2025-55182","summary":"React Server Components are Vulnerable to RCE","details":"A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints.","published":"2025-12-03T16:15:56.463Z","modified":"2026-08-27T09:37:41.998390Z","cvss":{"score":10,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},"epss":{"score":0.99802,"percentile":0.99957,"asOf":"2026-09-05"},"cisaKev":null,"exploitsKnown":116,"affectedPackages":[{"ecosystem":"npm","name":"react-server-dom-webpack","fixedVersion":"19.0.1"},{"ecosystem":"npm","name":"react-server-dom-webpack","fixedVersion":"19.1.2"},{"ecosystem":"npm","name":"react-server-dom-webpack","fixedVersion":"19.2.1"},{"ecosystem":"npm","name":"react-server-dom-turbopack","fixedVersion":"19.0.1"},{"ecosystem":"npm","name":"react-server-dom-turbopack","fixedVersion":"19.1.2"},{"ecosystem":"npm","name":"react-server-dom-turbopack","fixedVersion":"19.2.1"},{"ecosystem":"npm","name":"react-server-dom-parcel","fixedVersion":"19.0.1"},{"ecosystem":"npm","name":"react-server-dom-parcel","fixedVersion":"19.1.2"},{"ecosystem":"npm","name":"react-server-dom-parcel","fixedVersion":"19.2.1"}],"fix":null,"references":[{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182"},{"type":"ADVISORY","url":"https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/"},{"type":"ADVISORY","url":"https://www.facebook.com/security/advisories/cve-2025-55182"},{"type":"REPORT","url":"https://news.ycombinator.com/item?id=46136026"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2025/12/03/4"},{"type":"FIX","url":"https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T09:37:41.998390Z"}}