{"id":"CVE-2026-45109","revision":"10317011953b41c1b8915b49f54ba5e5","records":[{"revision":"10317011953b41c1b8915b49f54ba5e5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-45109","aliases":[],"title":"Next.js: Middleware / Proxy bypass in App Router applications via segment-prefetch routes","description":"Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.18 and 16.2.6, it was found that the fix addressing CVE-2026-44575 did not apply to middleware.ts with Turbopack. This vulnerability is fixed in 15.5.18 and 16.2.6.","state":0,"publishedAt":"2026-05-13T17:11:07.275+00:00","modifiedAt":"2026-08-13T12:04:29.81+00:00","affected":[{"ecosystem":"Vendor product","name":"next.js","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"vercel\",\n                    \"product\": \"next.js\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 15.2.0, < 15.5.17\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 16.0.0, < 16.2.6\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5,"severity":"HIGH"}],"references":["https://github.com/vercel/next.js/security/advisories/GHSA-26hh-7cqf-hhc6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45109","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-45109","identifiers":["CVE-2026-45109"]},"retained":false,"historicalAffected":[]}],"coverage":[]}