{"id":"CVE-2026-64645","revision":null,"records":[{"revision":"b84d544ab7dd49ceb8586bd0214f5e6e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64645","aliases":[],"title":"Next.js: Server-Side Request Forgery in rewrites via attacker-controlled destination hostname","description":"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.","state":0,"publishedAt":"2026-07-27T17:37:07.695+00:00","modifiedAt":"2026-07-28T14:02:21.877+00:00","affected":[{"ecosystem":"Vendor product","name":"next.js","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"vercel\",\n                    \"product\": \"next.js\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 12.0.0 < 15.5.21\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 16.0.0, < 16.2.11\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":8.3,"severity":"HIGH"}],"references":["https://github.com/vercel/next.js/security/advisories/GHSA-p9j2-gv94-2wf4","https://github.com/vercel/next.js/commit/35f501357e9b0fe7c950b0d6aa8fcf5343f707e9","https://github.com/vercel/next.js/commit/d3033266c6dff23f7be71e19341fe3a8c6e2c599","https://github.com/vercel/next.js/releases/tag/v15.5.21","https://github.com/vercel/next.js/releases/tag/v16.2.11"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64645","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64645","identifiers":["CVE-2026-64645"]},"retained":false,"historicalAffected":[]},{"revision":"bb6304f35e4549c69259d6f04d08580c","observedAt":"2026-10-25T15:18:45.851+00:00","statement":{"source":"nvd","id":"CVE-2026-64645","aliases":[],"title":"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","description":"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.","state":0,"publishedAt":"2026-07-27T18:16:59.453+00:00","modifiedAt":"2026-10-24T13:10:00.147+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"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","score":8.3,"severity":"HIGH"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1,"severity":"MEDIUM"}],"references":["https://github.com/vercel/next.js/commit/35f501357e9b0fe7c950b0d6aa8fcf5343f707e9","https://github.com/vercel/next.js/commit/d3033266c6dff23f7be71e19341fe3a8c6e2c599","https://github.com/vercel/next.js/releases/tag/v15.5.21","https://github.com/vercel/next.js/releases/tag/v16.2.11","https://github.com/vercel/next.js/security/advisories/GHSA-p9j2-gv94-2wf4"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-64645","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-601","CWE-918"],"productCriteria":["cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-07-27T18:16:59.453","lastModified":"2026-10-24T13:10:00.147"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-64645","identifiers":["CVE-2026-64645"]},"retained":false,"historicalAffected":[]},{"revision":"244ee210972a4ba1bc3d5646fad78a8d","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-p9j2-gv94-2wf4","aliases":["CVE-2026-64645"],"title":"Next.js: Server-Side Request Forgery in rewrites via attacker-controlled destination hostname","description":"## Impact\n\nA `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\u00A0hostname 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.\n\nThis affects any destination that puts a dynamic segment in the hostname, whether from the path:\n\n```javascript\n// next.config.js\nmodule.exports = {\n  async rewrites() {\n    return [\n      {\n        source: '/:tenant',\n        destination: 'https://:tenant.api.example.com',\n      },\n    ]\n  },\n}\n```\n\nor from a `has` capture:\n\n```javascript\n// next.config.js\nmodule.exports = {\n  async rewrites() {\n    return [\n      {\n        source: '/',\n        has: [{ type: 'query', key: 'region', value: '(?<region>.+)' }],\n        destination: 'https://:region.api.example.com',\n      },\n    ]\n  },\n}\n```\n\n## Workarounds\n\nIf you cannot upgrade immediately, do not build the hostname of an external `rewrites()` or `redirects()` destination from user-controlled input. If a dynamic subdomain is required, constrain the value to hostname-safe characters:  `value: '(?<region>[a-z0-9-]+)'`.","state":0,"publishedAt":"2026-07-22T23:02:23+00:00","modifiedAt":"2026-09-10T03:51:11.5546712+00:00","affected":[{"ecosystem":"npm","name":"next","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"12.0.0"},{"kind":"fixed","version":"15.5.21"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"next","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"16.0.0"},{"kind":"fixed","version":"16.2.11"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"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","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/vercel/next.js/security/advisories/GHSA-p9j2-gv94-2wf4","https://github.com/vercel/next.js/commit/35f501357e9b0fe7c950b0d6aa8fcf5343f707e9","https://github.com/vercel/next.js/commit/d3033266c6dff23f7be71e19341fe3a8c6e2c599","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"],"sourceUrl":"https://github.com/advisories/GHSA-p9j2-gv94-2wf4","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-p9j2-gv94-2wf4","identifiers":["GHSA-p9j2-gv94-2wf4","CVE-2026-64645"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-10-26T02:37:01.8023049+00:00","complete":true,"records":1756,"lastAttemptAt":"2026-10-26T02:37:01.8023049+00:00","lastSuccessAt":"2026-10-26T02:37:01.9582808+00:00","error":null,"lastVerifiedAt":"2026-10-26T02:37:01.9582828+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-5ba1945314e042c2ced14b33f3680fa71692812d925544312b218f5eb8a26e71-db718265d4164c5786f6ba29fb49aaca9f98d018ab1781237fdcf612cd6089e1","complete":true,"records":414057,"lastAttemptAt":"2026-10-26T02:35:18.1393313+00:00","lastSuccessAt":"2026-10-26T02:35:18.1285176+00:00","error":null,"lastVerifiedAt":"2026-10-26T02:35:18.1393313+00:00","snapshotPublishedAt":"2026-10-26T01:45:24+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-43321610382942b8ad8c85917eab1546","complete":false,"records":4735,"lastAttemptAt":"2026-10-26T02:37:04.5963782+00:00","lastSuccessAt":"2026-10-24T23:18:49.862+00:00","error":"InvalidDataException","lastVerifiedAt":"2026-10-24T23:18:49.862+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":4764,"expectedIdentifiers":13474},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-10-26T02:37:01.8023049+00:00","complete":true,"records":1093,"lastAttemptAt":"2026-10-26T02:37:01.8023049+00:00","lastSuccessAt":"2026-10-26T02:37:02.0734316+00:00","error":null,"lastVerifiedAt":"2026-10-26T02:37:02.0734335+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-204a3fb93a00487e8f7f36db01dc851d","complete":true,"records":13413,"lastAttemptAt":"2026-10-26T02:37:02.696128+00:00","lastSuccessAt":"2026-10-25T16:19:28.681+00:00","error":null,"lastVerifiedAt":"2026-10-25T16:19:28.681+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13474,"expectedIdentifiers":13474},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-2375a4e597279abf92e8747e140fe8da9d421877cd49cae3ac69a2cb78469b2c","complete":true,"records":9779,"lastAttemptAt":"2026-10-26T02:37:01.7380852+00:00","lastSuccessAt":"2026-10-24T13:19:53.1346702+00:00","error":null,"lastVerifiedAt":"2026-10-26T02:37:01.7380852+00:00","snapshotPublishedAt":"2026-10-24T03:03:12+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-16ad89dfea13ab9e9b0108e63a759d63bd4559cc68b58491107d62ee35bbbaf2","complete":true,"records":1965,"lastAttemptAt":"2026-10-26T02:35:18.2014911+00:00","lastSuccessAt":"2026-10-23T16:01:26.4487605+00:00","error":null,"lastVerifiedAt":"2026-10-26T02:35:18.2014911+00:00","snapshotPublishedAt":"2026-10-21T12:18:07+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-7da67a15aa6e56a0e3081a7646dc74d537e6ef974afc593c2b1794ed01970648","complete":true,"records":2969,"lastAttemptAt":"2026-10-26T02:37:01.7526933+00:00","lastSuccessAt":"2026-10-24T13:19:59.1145547+00:00","error":null,"lastVerifiedAt":"2026-10-26T02:37:01.7526933+00:00","snapshotPublishedAt":"2026-10-24T08:47:51+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-d6410afbb1aa373ee2535dba99f1cc1a4b2a7a61e4171d3e4abf4e44fb758256","complete":true,"records":230794,"lastAttemptAt":"2026-10-26T02:37:01.5387917+00:00","lastSuccessAt":"2026-10-26T02:37:00.2862835+00:00","error":null,"lastVerifiedAt":"2026-10-26T02:37:01.5387917+00:00","snapshotPublishedAt":"2026-10-26T01:48:28+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null}]}