{"cve":"CVE-2026-23864","nvd":{"published":"2026-01-26T20:16:16.773","modified":"2026-07-15T02:18:44.527","status":"Modified","description":"Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack.\n\nThe vulnerabilities are triggered by sending specially crafted HTTP requests to Server Function endpoints, and could lead to server crashes, out-of-memory exceptions or excessive CPU usage; depending on the vulnerable code path being exercised, the application configuration and application code.\n\nStrongly consider upgrading to the latest package versions to reduce risk and prevent availability issues in applications using React Server Components.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400","CWE-502","CWE-1284"],"references":["https://www.facebook.com/security/advisories/cve-2026-23864","https://access.redhat.com/errata/RHSA-2026:13571","https://access.redhat.com/errata/RHSA-2026:34608","https://access.redhat.com/security/cve/CVE-2026-23864","https://bugzilla.redhat.com/show_bug.cgi?id=2433059"],"products":["facebook:react"],"source":"nvd","synced_at":"2026-10-19T22:21:16.563232421+00:00"},"epss":{"cve":"CVE-2026-23864","score":0.02581,"percentile":0.85223,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-83fc-fqcc-2hmg","url":"https://osv.dev/vulnerability/GHSA-83fc-fqcc-2hmg","summary":"React Server Components have multiple Denial of Service Vulnerabilities","modified":"2026-02-03T03:04:05.946880Z","packages":[{"ecosystem":"npm","name":"react-server-dom-parcel","purl":"pkg:npm/react-server-dom-parcel","ranges":[">=19.0.0 <19.0.4"],"fixed":["19.0.4"]},{"ecosystem":"npm","name":"react-server-dom-turbopack","purl":"pkg:npm/react-server-dom-turbopack","ranges":[">=19.1.0-canary-7130d0c6-20241212 <19.1.5"],"fixed":["19.1.5"]},{"ecosystem":"npm","name":"react-server-dom-webpack","purl":"pkg:npm/react-server-dom-webpack","ranges":[">=19.2.0-canary-63779030-20250328 <19.2.4"],"fixed":["19.2.4"]},{"ecosystem":"npm","name":"react-server-dom-turbopack","purl":"pkg:npm/react-server-dom-turbopack","ranges":[">=19.0.0 <19.0.4"],"fixed":["19.0.4"]},{"ecosystem":"npm","name":"react-server-dom-parcel","purl":"pkg:npm/react-server-dom-parcel","ranges":[">=19.1.0-canary-7130d0c6-20241212 <19.1.5"],"fixed":["19.1.5"]},{"ecosystem":"npm","name":"react-server-dom-parcel","purl":"pkg:npm/react-server-dom-parcel","ranges":[">=19.2.0-canary-63779030-20250328 <19.2.4"],"fixed":["19.2.4"]},{"ecosystem":"npm","name":"react-server-dom-webpack","purl":"pkg:npm/react-server-dom-webpack","ranges":[">=19.1.0-canary-7130d0c6-20241212 <19.1.5"],"fixed":["19.1.5"]},{"ecosystem":"npm","name":"react-server-dom-webpack","purl":"pkg:npm/react-server-dom-webpack","ranges":[">=19.0.0 <19.0.4"],"fixed":["19.0.4"]},{"ecosystem":"npm","name":"react-server-dom-turbopack","purl":"pkg:npm/react-server-dom-turbopack","ranges":[">=19.2.0-canary-63779030-20250328 <19.2.4"],"fixed":["19.2.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}