CVE-2026-75604Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
- 9.0CriticalCVSS base score
- 2.1%Exploitation in 30 daysEPSS · top 18% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module for it.
Show the exploits1
Metasploit modules1 module
- Next.js Unauthenticated RCE on Windows Servers (Metasploit module) (opens in a new tab)
exploit/windows/http/nextjs_unauth_rce_cve_2026_75604Rank excellentdisclosed 26 Aug 2026
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By GitHub_M
- 15 days later
· 15 days later
Published
- 3 days later
· 3 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Critical9.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | Critical9.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 2.1% · top 18% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.0.
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
References
References5
- https://github.com/vercel/next.js/security/advisories/GHSA-p293-qw3h-jr36 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/vercel/next.js/commit/968b9fcb26bdeb8e0a861a9df05361474666d51b (opens in a new tab)x_refsource_MISC
- https://github.com/vercel/next.js/commit/b0f3460a92b955d3ca41fccff9a525a2b910fbf3 (opens in a new tab)x_refsource_MISC
- https://github.com/vercel/next.js/releases/tag/v15.5.24 (opens in a new tab)x_refsource_MISC
- https://github.com/vercel/next.js/releases/tag/v16.3.3 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-69702 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-p293-qw3h-jr36 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-75604)Record last updated .