{"schema_version":"1.9.0","id":"GHSA-mcj8-r9mp-w47p","published":"2026-10-07T20:31:13Z","modified":"2026-10-07T20:45:04.800999218Z","aliases":["CVE-2026-94484"],"summary":"Next.js has cache poisoning in SSG/ISR rendering that leads to cross-user content substitution and persistent denial of service","details":"Next.js applications that use a root-level catch-all page together with statically generated or Incremental Static Regeneration routes can have their shared response cache poisoned by a single unauthenticated crafted request.","affected":[{"package":{"name":"next","ecosystem":"npm","purl":"pkg:npm/next"},"ranges":[{"type":"SEMVER","events":[{"introduced":"16.0.0"},{"fixed":"16.3.8"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-mcj8-r9mp-w47p/GHSA-mcj8-r9mp-w47p.json"}},{"package":{"name":"next","ecosystem":"npm","purl":"pkg:npm/next"},"ranges":[{"type":"SEMVER","events":[{"introduced":"15.0.0"},{"fixed":"15.5.27"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-mcj8-r9mp-w47p/GHSA-mcj8-r9mp-w47p.json"}}],"references":[{"type":"WEB","url":"https://github.com/vercel/next.js/security/advisories/GHSA-mcj8-r9mp-w47p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-94484"},{"type":"WEB","url":"https://github.com/vercel/next.js/commit/52c94abdd2ea5f416f5e8353ea8a2edd3fe311b8"},{"type":"WEB","url":"https://github.com/vercel/next.js/commit/719e4c67d6e92df60246f95e1d96e2dd60789a52"},{"type":"PACKAGE","url":"https://github.com/vercel/next.js"},{"type":"WEB","url":"https://github.com/vercel/next.js/releases/tag/v15.5.27"},{"type":"WEB","url":"https://github.com/vercel/next.js/releases/tag/v16.3.8"}],"database_specific":{"cwe_ids":["CWE-524"],"github_reviewed":true,"github_reviewed_at":"2026-10-07T20:31:13Z","nvd_published_at":"2026-10-02T16:16:51Z","severity":"MODERATE"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}]}