{"id":"CVE-2026-64645","sourceIdentifier":"security-advisories@github.com","published":"2026-07-27T18:16:59.453","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 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a\n rewrites() or redirects() rule that builds its external destination hostname from request-controlled input can be pointed at an arbitrary hostname, regardless of the rule's hostname suffix. For a rewrite, Next.js proxies the request to that arbitrary host and serves the response from the application's origin, leading to Server-Side Request forgery. A redirects() rule configured this way is vulnerable to an Open Redirect. 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 12.0.0 a 15.5.20 y 16.0.0 a 16.2.10, una regla de rewrites() o redirects() que construye su nombre de host de destino externo a partir de una entrada controlada por la petición puede ser apuntada a un nombre de host arbitrario, independientemente del sufijo del nombre de host de la regla. Para una reescritura, Next.js proxy la petición a ese host arbitrario y sirve la respuesta desde el origen de la aplicación, lo que lleva a una falsificación de petición del lado del servidor. Una regla de redirects() configurada de esta manera es vulnerable a una redirección abierta. 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":">= 12.0.0 < 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:H/VI:L/VA:N/SC:L/SI:L/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":8.3,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","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:R/S:C/C:L/I:L/A:N","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.7}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-28T14:01:56.498968Z","id":"CVE-2026-64645","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-601"},{"lang":"en","value":"CWE-918"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*","versionStartIncluding":"12.0.0","versionEndExcluding":"15.5.21","matchCriteriaId":"59C65BAA-E45C-4948-9471-7D26EA66449C"},{"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/35f501357e9b0fe7c950b0d6aa8fcf5343f707e9","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/vercel/next.js/commit/d3033266c6dff23f7be71e19341fe3a8c6e2c599","source":"security-advisories@github.com","tags":["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-p9j2-gv94-2wf4","source":"security-advisories@github.com","tags":["Mitigation","Vendor Advisory"]}]}