{"id":"CVE-2026-64641","sourceIdentifier":"security-advisories@github.com","published":"2026-07-27T18:16:58.850","lastModified":"2026-10-24T13:10:00.147","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"Next.js es un framework de React para construir aplicaciones web full-stack. En las versiones 13.0.0 hasta la 15.5.20 y 16.0.0 hasta la 16.2.10, solicitudes elaboradas dirigidas a aplicaciones Next.js que usan App Router con al menos una Server Action pueden llevar a un uso excesivo de CPU bloqueando el procesamiento de solicitudes adicionales en el mismo proceso. Este problema ha sido solucionado en las versiones 15.5.21 y 16.2.11."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"vercel","product":"next.js","versions":[{"version":">= 13.0.0, < 15.5.21","status":"affected"},{"version":">= 16.0.0, < 16.2.11","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":8.2,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-27T18:54:52.018065Z","id":"CVE-2026-64641","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-834"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*","versionStartIncluding":"13.0.0","versionEndExcluding":"15.5.21","matchCriteriaId":"A35AD882-35BE-4B3B-8BBC-11ED8E8E1336"},{"vulnerable":true,"criteria":"cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*","versionStartIncluding":"16.0.0","versionEndExcluding":"16.2.11","matchCriteriaId":"841758BF-9324-4127-B087-6A8C1BADB389"}]}]}],"references":[{"url":"https://github.com/vercel/next.js/commit/019628571641dec57aaf349ba0c360e3964e6f12","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/vercel/next.js/pull/96013","source":"security-advisories@github.com","tags":["Issue Tracking","Patch"]},{"url":"https://github.com/vercel/next.js/releases/tag/v15.5.21","source":"security-advisories@github.com","tags":["Product","Release Notes"]},{"url":"https://github.com/vercel/next.js/releases/tag/v16.2.11","source":"security-advisories@github.com","tags":["Product","Release Notes"]},{"url":"https://github.com/vercel/next.js/security/advisories/GHSA-m99w-x7hq-7vfj","source":"security-advisories@github.com","tags":["Vendor Advisory"]}]}