{"schemaVersion":3,"id":"CVE-2026-75604","aliases":["GHSA-p293-qw3h-jr36","CGA-2hcq-5c5v-2g33","CGA-6cv2-wcj5-c985","CGA-9rc7-9mc7-f2xh","CGA-9wjh-87m8-vjr4","CGA-c9g7-5vf5-h94w","CGA-cfhf-7m5g-42qm","CGA-crgh-93cj-4frj","CGA-g9vf-v5cf-xwr8","CGA-h6qg-rq9w-24gx","CGA-jvm2-hf98-84v6","CGA-mhm7-q2c3-px4r","CGA-xf8w-g7c4-vjw4"],"status":"published","duplicateOf":null,"title":null,"description":"Next.js is a React framework for building full-stack web applications. From 13.4.0 until 15.5.24 and 16.3.3, Next.js applications using Pages Router or App Router without Cache Components on Windows-hosted servers do not consistently escape backslashes in route segments before constructing incremental-cache paths. In packages/next/src/shared/lib/router/utils/escape-path-delimiters.ts and packages/next/src/server/lib/incremental-cache/file-system-cache.ts, a remote request can supply encoded Windows path separators that traverse outside the intended cache root and expose private build data, including the server-reference-manifest encryption key. Disclosure of that key can enable remote code execution in the affected application. This issue is fixed in versions 15.5.24 and 16.3.3.","dates":{"published":"2026-09-01T21:23:30.859Z","modified":"2026-09-04T19:54:40.089Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":9,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Npm","score":9,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","exploitability":5.6,"impact":10,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · 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