{"action":"Upgrade next to 15.5.21 or later.","affected":[{"fixed":"15.5.21","introduced":"13.0.0"},{"fixed":"16.2.11","introduced":"16.0.0"}],"component":"next","cve_ids":["CVE-2026-64643"],"ecosystem":"npm","epss":0.0051,"exploited":false,"fixed_versions":["15.5.21","16.2.11"],"ghsa_id":"GHSA-955p-x3mx-jcvp","id":"tcs_01M5KFET3F2QRAX1C9BK9XHBAW","modified_at":"2026-09-10T03:51:11.198992864Z","published_at":"2026-07-22T23:00:34Z","references":["https://osv.dev/vulnerability/GHSA-955p-x3mx-jcvp","https://github.com/vercel/next.js/security/advisories/GHSA-955p-x3mx-jcvp","https://github.com/vercel/next.js/commit/1b0c3ae912a3ad925c60065cc8d55b070fa8bcd3","https://github.com/vercel/next.js/commit/ff12a6124e1504f17b62de948b8a553fdecaef7b","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"],"severity":{"label":"medium"},"sources":[{"source":"osv","source_id":"GHSA-955p-x3mx-jcvp","url":"https://osv.dev/vulnerability/GHSA-955p-x3mx-jcvp"}],"summary":"Next.js: Unauthenticated disclosure of internal Server Function endpoints"}