{"cve":"CVE-2026-64646","nvd":{"published":"2026-07-27T19:17:21.477","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, requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive memory consumption if that Server Actions uses the Edge runtime. 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:L/SC:N/SI:N/SA:N","score":6.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-770"],"references":["https://github.com/vercel/next.js/commit/57c31f724d746e86a9e8b92aa8be538a922446a4","https://github.com/vercel/next.js/commit/9a4651e754f70b12e397694ffc41f44c3ba8cc17","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-4c39-4ccg-62r3"],"products":["vercel:next.js"],"source":"nvd","synced_at":"2026-10-24T16:53:27.712498749+00:00"},"epss":{"cve":"CVE-2026-64646","score":0.00524,"percentile":0.4414,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-4c39-4ccg-62r3","url":"https://osv.dev/vulnerability/GHSA-4c39-4ccg-62r3","summary":"Next.js: Unbounded Server Action payload in Edge runtime","modified":"2026-09-10T03:50:51.398762372Z","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."]}