{"id":"GHSA-m99w-x7hq-7vfj","revision":"c5b02b2e985d433295d60aac652073f6","records":[{"revision":"c5b02b2e985d433295d60aac652073f6","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-m99w-x7hq-7vfj","aliases":["CVE-2026-64641"],"title":"Next.js: Denial of Service in App Router using Server Actions","description":"## Impact\n\nCrafted 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.\n\n## Workarounds\n\nNo workaround exists besides upgrading. Applications using Pages Router or not using Server Actions are not vulnerable.","state":0,"publishedAt":"2026-07-22T22:59:01+00:00","modifiedAt":"2026-09-10T03:50:52.7189715+00:00","affected":[{"ecosystem":"npm","name":"next","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"13.0.0"},{"kind":"fixed","version":"15.5.21"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"next","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"16.0.0"},{"kind":"fixed","version":"16.2.11"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"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":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/vercel/next.js/security/advisories/GHSA-m99w-x7hq-7vfj","https://github.com/vercel/next.js/pull/96013","https://github.com/vercel/next.js/commit/019628571641dec57aaf349ba0c360e3964e6f12","https://github.com/vercel/next.js","https://github.com/vercel/next.js/releases/tag/v15.5.21","https://github.com/vercel/next.js/releases/tag/v16.2.11"],"sourceUrl":"https://github.com/advisories/GHSA-m99w-x7hq-7vfj","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-m99w-x7hq-7vfj","identifiers":["GHSA-m99w-x7hq-7vfj","CVE-2026-64641"]},"retained":false,"historicalAffected":[]}],"coverage":[]}