{"id":"GHSA-4c39-4ccg-62r3","summary":"Next.js: Unbounded Server Action payload in Edge runtime","details":"## Impact\n\nRequests 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\n\n## Workarounds\n\nIf you cannot upgrade, ensure your hosting provider limits the request's body size. 5 MiB should be allowed at max by your hosting provider.","aliases":["CVE-2026-64646"],"modified":"2026-07-22T23:25:41.150802Z","published":"2026-07-22T23:02:43Z","database_specific":{"github_reviewed_at":"2026-07-22T23:02:43Z","nvd_published_at":null,"cwe_ids":["CWE-770"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/vercel/next.js/security/advisories/GHSA-4c39-4ccg-62r3"},{"type":"WEB","url":"https://github.com/vercel/next.js/commit/57c31f724d746e86a9e8b92aa8be538a922446a4"},{"type":"WEB","url":"https://github.com/vercel/next.js/commit/9a4651e754f70b12e397694ffc41f44c3ba8cc17"},{"type":"PACKAGE","url":"https://github.com/vercel/next.js"},{"type":"WEB","url":"https://github.com/vercel/next.js/releases/tag/v15.5.21"},{"type":"WEB","url":"https://github.com/vercel/next.js/releases/tag/v16.2.11"}],"affected":[{"package":{"name":"next","ecosystem":"npm","purl":"pkg:npm/next"},"ranges":[{"type":"SEMVER","events":[{"introduced":"13.0.0"},{"fixed":"15.5.21"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-4c39-4ccg-62r3/GHSA-4c39-4ccg-62r3.json"}},{"package":{"name":"next","ecosystem":"npm","purl":"pkg:npm/next"},"ranges":[{"type":"SEMVER","events":[{"introduced":"16.0.0"},{"fixed":"16.2.11"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-4c39-4ccg-62r3/GHSA-4c39-4ccg-62r3.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}