vercel next.js up to 15.5.23/16.3.2 on Windows Router path traversal

Summaryinfo

A vulnerability was found in vercel next.js up to 15.5.23/16.3.2 on Windows. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the component Router. Performing a manipulation results in path traversal. This vulnerability is known as CVE-2026-75604. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in vercel next.js up to 15.5.23/16.3.2 on Windows. This affects an unknown function of the component Router. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-75604. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 15.5.24 or 16.3.3 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Type

• JavaScript Library

Vendor

• vercel

Name

• next.js

Version

• 15.5.0
• 15.5.1
• 15.5.2
• 15.5.3
• 15.5.4
• 15.5.5
• 15.5.6
• 15.5.7
• 15.5.8
• 15.5.9
• 15.5.10
• 15.5.11
• 15.5.12
• 15.5.13
• 15.5.14
• 15.5.15
• 15.5.16
• 15.5.17
• 15.5.18
• 15.5.19
• 15.5.20
• 15.5.21
• 15.5.22
• 15.5.23
• 16.3.0
• 16.3.1
• 16.3.2

Website

• Product: https://github.com/vercel/next.js/

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CPE 2.2info

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