{"cve":"CVE-2026-64641","nvd":{"published":"2026-07-27T18:16:58.850","modified":"2026-10-24T13:10:00.147","status":"Analyzed","description":"Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further requests in the same process. This issue has been fixed in versions 15.5.21 and 16.2.11.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.2},"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-834"],"references":["https://github.com/vercel/next.js/commit/019628571641dec57aaf349ba0c360e3964e6f12","https://github.com/vercel/next.js/pull/96013","https://github.com/vercel/next.js/releases/tag/v15.5.21","https://github.com/vercel/next.js/releases/tag/v16.2.11","https://github.com/vercel/next.js/security/advisories/GHSA-m99w-x7hq-7vfj"],"products":["vercel:next.js"],"source":"nvd","synced_at":"2026-10-24T16:53:27.712498749+00:00"},"epss":{"cve":"CVE-2026-64641","score":0.00856,"percentile":0.58105,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-m99w-x7hq-7vfj","url":"https://osv.dev/vulnerability/GHSA-m99w-x7hq-7vfj","summary":"Next.js: Denial of Service in App Router using Server Actions","modified":"2026-09-10T03:50:52.718971454Z","packages":[{"ecosystem":"npm","name":"next","purl":"pkg:npm/next","ranges":[">=13.0.0 <15.5.21"],"fixed":["15.5.21"]},{"ecosystem":"npm","name":"next","purl":"pkg:npm/next","ranges":[">=16.0.0 <16.2.11"],"fixed":["16.2.11"]}]}],"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."]}