Path traversal in Next.js - CVE-2026-75604
Published: August 26, 2026 / Updated: October 2, 2026
Vulnerability identifier: #VU145734
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-75604
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to path traversal in Pages and App router without Cache Component when handling requests on servers hosted on a Windows filesystem. A remote attacker can send a specially crafted request to execute arbitrary code.
Only applications using Pages and App router without Cache Component on Windows-hosted servers are vulnerable.
Affected software
Next.js
QRadar Pre-Validation App
QRadar Pre-Validation App
How to mitigate CVE-2026-75604
Install security update from vendor's website.
Next.js - addressed in versions 15.5.24, 16.3.3
QRadar Pre-Validation App - update to 3.0.0
QRadar Pre-Validation App - update to 3.0.0
Links to Public Exploits and PoC-codes
- Exploit #13093 - cve-2026-75604 (Research lab and exploit chain for CVE-2026-75604: path traversal in the Next.js incremental cache, to RCE on Windows.) (October 2, 2026)
- Exploit #13065 - Next.js Unauthenticated RCE on Windows Servers (September 9, 2026)
- Exploit #12999 - Project-CVE-2026-75604 (A Python-based exploitation framework for CVE-2026-75604 that enables authorized penetration testers to validate Next.js Windows cache traversal vulnerabilities. Deploys reverse shells and webshells via path traversal, with built-i (August 31, 2026)