{"id":"CVE-2026-64645","title":"next: Next.js: Server-Side Request Forgery vulnerability (CVE-2026-64645)","summary":"A flaw was found in Next.js, a React framework for building web applications. This vulnerability allows a remote attacker to perform Server-Side Request Forgery (SSRF) or Open Redirect attacks. When a `rewrites()` or `redirects()` rule con…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","cvssSource":"vendor","cwe":"CWE-918","vendor":"Red Hat","product":"Red Hat Enterprise Linux AI (RHEL AI) 3","affected":["enterprise_linux_ai_rhel_ai 3","streams_for_apache_kafka 2","streams_for_apache_kafka 3.2.1"],"patched":["streams_for_apache_kafka 3.2.1"],"published":"2026-07-27","updated":"2026-10-06","sourceUpdated":"2026-10-06T19:30:29+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64645.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64645.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-64645"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507618"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64645"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64645"},{"url":"https://github.com/vercel/next.js/commit/35f501357e9b0fe7c950b0d6aa8fcf5343f707e9"},{"url":"https://github.com/vercel/next.js/commit/d3033266c6dff23f7be71e19341fe3a8c6e2c599"},{"url":"https://github.com/vercel/next.js/releases/tag/v15.5.21"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.2.11"},{"url":"https://github.com/vercel/next.js/security/advisories/GHSA-p9j2-gv94-2wf4"},{"url":"https://access.redhat.com/errata/RHSA-2026:54435"},{"url":"https://github.com/advisories/GHSA-p9j2-gv94-2wf4"}],"tags":["csaf","vex","red-hat","ghsa","npm"],"epss":0.00414,"epssPercentile":0.35462,"aliases":["GHSA-p9j2-gv94-2wf4"],"ecosystem":"npm","ingestedAt":"2026-07-22T23:07:32.217Z","slug":"CVE-2026-64645","body":"## Overview\n\nA flaw was found in Next.js, a React framework for building web applications. This vulnerability allows a remote attacker to perform Server-Side Request Forgery (SSRF) or Open Redirect attacks. When a `rewrites()` or `redirects()` rule constructs an external destination hostname using attacker-controlled input, the application can be coerced into proxying requests to arbitrary hosts, leading to SSRF. Additionally, this misconfiguration can result in Open Redirects, potentially exposing users to phishing.\n\n## Vendor advisories\n\n- **RHSA-2026:54435** · Red Hat · fixed in: Streams for Apache Kafka 3.2.1 · released 2026-08-12 · [advisory](https://access.redhat.com/errata/RHSA-2026:54435)\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux AI (RHEL AI) 3, streams for Apache Kafka 2 · no fix planned: Red Hat Enterprise Linux AI (RHEL AI) 3, streams for Apache Kafka 2 · updated 2026-10-06 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64645.json)\n\n**next: Next.js: Server-Side Request Forgery vulnerability** — rated Important by Red Hat. Released 2026-07-27, updated 2026-10-06.\n\nAffected:\n\n- Red Hat Enterprise Linux AI (RHEL AI) 3\n- streams for Apache Kafka 2\n\nFixed:\n\n- Streams for Apache Kafka 3.2.1\n\nNo fix planned:\n\n- Red Hat Enterprise Linux AI (RHEL AI) 3\n- streams for Apache Kafka 2\n\nNot affected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat Trusted Artifact Signer\n\n## Remediation\n\nBefore applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:54435\n\n## Package advisory (CVE-2026-64645)\n\nAffected packages:\n\n- `next >= 12.0.0, < 15.5.21`\n- `next >= 16.0.0, < 16.2.11`\n\nPatched in:\n\n- `next 15.5.21`\n- `next 16.2.11`\n\nSource: https://github.com/advisories/GHSA-p9j2-gv94-2wf4","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":217230,"id":"CVE-2026-64645","ts":1791360787282,"field":"cvss","old":null,"new":"8.2"}]}