{"id":"CVE-2026-75604","title":"Next.js is a React framework for building full-stack web applications","summary":"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 esc…","severity":"critical","cvss":9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-22"],"vendor":"next","product":"next","affected":["next >= 13.4.0, < 15.5.24","next >= 16.0.0, < 16.3.3"],"patched":["next 15.5.24","next 16.3.3"],"published":"2026-09-01","updated":"2026-09-09","sourceUpdated":"2026-09-09T21:09:13.080","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-75604","references":[{"url":"https://github.com/vercel/next.js/commit/968b9fcb26bdeb8e0a861a9df05361474666d51b","label":"security-advisories@github.com"},{"url":"https://github.com/vercel/next.js/commit/b0f3460a92b955d3ca41fccff9a525a2b910fbf3","label":"security-advisories@github.com"},{"url":"https://github.com/vercel/next.js/releases/tag/v15.5.24","label":"security-advisories@github.com"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.3.3","label":"security-advisories@github.com"},{"url":"https://github.com/vercel/next.js/security/advisories/GHSA-p293-qw3h-jr36","label":"security-advisories@github.com"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-75604"},{"url":"https://github.com/advisories/GHSA-p293-qw3h-jr36"}],"tags":["nvd","exploit-available","ghsa","npm"],"epss":0.02462,"epssPercentile":0.83745,"exploits":{"github":4,"githubRepos":["https://github.com/rafabd1/CVE-2026-75604-poc","https://github.com/HackSpeak/CVE-2026-75604","https://github.com/e4zyy/Project-CVE-2026-75604"],"metasploit":["exploit/windows/http/nextjs_unauth_rce_cve_2026_75604"],"checkedAt":"2026-09-23T07:14:47.860Z"},"exploitAvailable":true,"aliases":["GHSA-p293-qw3h-jr36"],"ecosystem":"npm","ingestedAt":"2026-09-08T21:11:12.322Z","slug":"CVE-2026-75604","body":"## Overview\n\nNext.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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-75604)\n\nAffected packages:\n\n- `next >= 13.4.0, < 15.5.24`\n- `next >= 16.0.0, < 16.3.3`\n\nPatched in:\n\n- `next 15.5.24`\n- `next 16.3.3`\n\nSource: https://github.com/advisories/GHSA-p293-qw3h-jr36","depth":"abyssal","depthScore":62,"depthScoreParts":{"impact":49.5,"likelihood":0.5,"exploitation":12,"ransomware":0},"changes":[]}