{"cve_id":"CVE-2025-55182","published":"2025-12-03T16:15:56.463000+00:00","last_modified":"2026-10-18T17:10:00.110000+00:00","vuln_status":"Analyzed","description":"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.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","base_score":10.0,"base_severity":"CRITICAL","attack_vector":"NETWORK","privileges_req":"NONE","user_interaction":"NONE","scope":"CHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-502"],"in_kev":true,"kev_date_added":"2025-12-05","kev_ransomware":true,"epss_score":0.99802,"epss_percentile":0.99958,"cap_rule_version":"0.1.1","stage":"INITIAL_ACCESS","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"PRIV","caps":["CODE_EXEC","PRIV_GAIN"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-10-28T03:24:50.302798+00:00","first_seen":"2025-12-03T16:15:56.463000+00:00","kev_first_seen":"2025-12-05T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["facebook","vercel"],"products":["next.js","react"],"affected":[{"vendor":"facebook","product":"react","ranges":["19.0.0","19.1.0","19.1.1","19.2.0"]},{"vendor":"vercel","product":"next.js","ranges":["≥ 15.0.0 and < 15.0.5","≥ 15.1.0 and < 15.1.9","≥ 15.2.0 and < 15.2.6","≥ 15.3.0 and < 15.3.6","≥ 15.4.0 and < 15.4.8","≥ 15.5.0 and < 15.5.7","≥ 16.0.0 and < 16.0.7","14.3.0","15.6.0","16.0.0"]}]}