{"cve":{"cve_id":"CVE-2025-55184","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.65592,"epss_percentile":0.99163,"epss_as_of":"2026-06-23","description":"A pre-authentication denial of service vulnerability exists in 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. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints, which can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.","published_at":"2025-12-11T20:05:01.328000Z","last_modified_at":null,"cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://www.facebook.com/security/advisories/cve-2025-55184","https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:27:38.349970Z"},"effective_severity":"HIGH","badges":["poc","epss"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"meta","vendor_name":"Meta","product_slug":"react-server-dom-parcel","product_name":"react-server-dom-parcel","version_start":"19.2.0","version_start_inclusive":true,"version_end":"19.2.1","version_end_inclusive":true,"cpe23_uri":"cve5:meta:react-server-dom-parcel:19.2.0:19.2.1"},{"vendor_slug":"meta","vendor_name":"Meta","product_slug":"react-server-dom-parcel","product_name":"react-server-dom-parcel","version_start":"19.0.0","version_start_inclusive":true,"version_end":"19.0.1","version_end_inclusive":true,"cpe23_uri":"cve5:meta:react-server-dom-parcel:19.0.0:19.0.1"},{"vendor_slug":"meta","vendor_name":"Meta","product_slug":"react-server-dom-parcel","product_name":"react-server-dom-parcel","version_start":"19.1.0","version_start_inclusive":true,"version_end":"19.1.2","version_end_inclusive":true,"cpe23_uri":"cve5:meta:react-server-dom-parcel:19.1.0:19.1.2"},{"vendor_slug":"meta","vendor_name":"Meta","product_slug":"react-server-dom-turbopack","product_name":"react-server-dom-turbopack","version_start":"19.1.0","version_start_inclusive":true,"version_end":"19.1.2","version_end_inclusive":true,"cpe23_uri":"cve5:meta:react-server-dom-turbopack:19.1.0:19.1.2"},{"vendor_slug":"meta","vendor_name":"Meta","product_slug":"react-server-dom-turbopack","product_name":"react-server-dom-turbopack","version_start":"19.0.0","version_start_inclusive":true,"version_end":"19.0.1","version_end_inclusive":true,"cpe23_uri":"cve5:meta:react-server-dom-turbopack:19.0.0:19.0.1"},{"vendor_slug":"meta","vendor_name":"Meta","product_slug":"react-server-dom-turbopack","product_name":"react-server-dom-turbopack","version_start":"19.2.0","version_start_inclusive":true,"version_end":"19.2.1","version_end_inclusive":true,"cpe23_uri":"cve5:meta:react-server-dom-turbopack:19.2.0:19.2.1"},{"vendor_slug":"meta","vendor_name":"Meta","product_slug":"react-server-dom-webpack","product_name":"react-server-dom-webpack","version_start":"19.0.0","version_start_inclusive":true,"version_end":"19.0.1","version_end_inclusive":true,"cpe23_uri":"cve5:meta:react-server-dom-webpack:19.0.0:19.0.1"},{"vendor_slug":"meta","vendor_name":"Meta","product_slug":"react-server-dom-webpack","product_name":"react-server-dom-webpack","version_start":"19.2.0","version_start_inclusive":true,"version_end":"19.2.1","version_end_inclusive":true,"cpe23_uri":"cve5:meta:react-server-dom-webpack:19.2.0:19.2.1"},{"vendor_slug":"meta","vendor_name":"Meta","product_slug":"react-server-dom-webpack","product_name":"react-server-dom-webpack","version_start":"19.1.0","version_start_inclusive":true,"version_end":"19.1.2","version_end_inclusive":true,"cpe23_uri":"cve5:meta:react-server-dom-webpack:19.1.0:19.1.2"}],"exploit_refs":[{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-55184.yaml","title":"React Server Components - Denial of Service","author":"DhiyaneshDk","disclosed_at":null}],"news":[],"references":[{"url":"https://www.facebook.com/security/advisories/cve-2025-55184","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2025-12-11T20:05:01.328000Z","label":"CVE published","source":null},{"type":"poc_available","at":"2026-06-24T00:29:48.638073Z","label":"Public PoC available","source":"nuclei"},{"type":"cvss_changed","at":"2026-06-28T17:47:54.064885Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:47:54.064885Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:47:54.064885Z","label":"CVSS score revised","source":"cvelistv5"}]}