{"schema_version":"1.9.0","id":"GHSA-4jqv-mc3x-m676","published":"2026-10-07T20:32:06Z","modified":"2026-10-07T20:45:06.342983181Z","aliases":["CVE-2026-94543"],"summary":"Next.js has cache poisoning of SSG and ISR pages in self-hosted applications","details":"Self-hosted Next.js applications that use the Pages Router with statically generated (SSG) or incrementally regenerated (ISR) pages can have a page's cache entry replaced with content from a different route, causing the affected page to serve wrong content to every visitor until the entry is revalidated. Applications deployed on Vercel are not affected.","affected":[{"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-4jqv-mc3x-m676/GHSA-4jqv-mc3x-m676.json"}},{"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-4jqv-mc3x-m676/GHSA-4jqv-mc3x-m676.json"}}],"references":[{"type":"WEB","url":"https://github.com/vercel/next.js/security/advisories/GHSA-4jqv-mc3x-m676"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-94543"},{"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":"2026-10-07T20:32:06Z","nvd_published_at":"2026-10-02T16:16:52Z","severity":"MODERATE"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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"}]}