{"id":"CVE-2026-64641","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-64641","generatedAt":"2026-10-28T04:43:56.265Z","title":"Next.js is a React framework for building full-stack web applications.","description":"Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, crafted 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. This issue has been fixed in versions 15.5.21 and 16.2.11.","published":"2026-07-27T18:16:59.000Z","lastModified":"2026-10-24T13:10:00.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":8.2,"severity":"HIGH","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-834"],"affected":["vercel/next.js"],"epss":{"score":0.00856,"percentile":0.58179,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.86%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/vercel/next.js/commit/019628571641dec57aaf349ba0c360e3964e6f12","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/vercel/next.js/pull/96013","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/vercel/next.js/releases/tag/v15.5.21","tags":["Product","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.2.11","tags":["Product","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/vercel/next.js/security/advisories/GHSA-m99w-x7hq-7vfj","tags":["Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64641","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}