vercel next.js up to 14.2.30/15.4.4 Image input validation

Summaryinfo

A vulnerability categorized as problematic has been discovered in vercel next.js up to 14.2.30/15.4.4. This affects an unknown part of the component Image Handler. Executing a manipulation can lead to input validation. The identification of this vulnerability is CVE-2025-55173. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in vercel next.js up to 14.2.30/15.4.4. This vulnerability affects an unknown functionality of the component Image Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect integrity. CVE summarizes:

Next.js is a React framework for building full-stack web applications. In versions before 14.2.31 and from 15.0.0 to before 15.4.5, Next.js Image Optimization is vulnerable to content injection. The issue allowed attacker-controlled external image sources to trigger file downloads with arbitrary content and filenames under specific configurations. This behavior could be abused for phishing or malicious file delivery. This vulnerability has been fixed in Next.js versions 14.2.31 and 15.4.5.

The advisory is available at github.com. This vulnerability was named CVE-2025-55173 since 08/07/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 261409 (Linux Distros Unpatched Vulnerability : CVE-2025-55173), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 14.2.31 or 15.4.5 eliminates this vulnerability. The upgrade is hosted for download at vercel.com. Applying the patch 6b12c60c61ee80cb0443ccd20de82ca9b4422ddd is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (261409). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• JavaScript Library

Vendor

• vercel

Name

• next.js

Version

• 14.2.0
• 14.2.1
• 14.2.2
• 14.2.3
• 14.2.4
• 14.2.5
• 14.2.6
• 14.2.7
• 14.2.8
• 14.2.9
• 14.2.10
• 14.2.11
• 14.2.12
• 14.2.13
• 14.2.14
• 14.2.15
• 14.2.16
• 14.2.17
• 14.2.18
• 14.2.19
• 14.2.20
• 14.2.21
• 14.2.22
• 14.2.23
• 14.2.24
• 14.2.25
• 14.2.26
• 14.2.27
• 14.2.28
• 14.2.29
• 14.2.30
• 15.4.0
• 15.4.1
• 15.4.2
• 15.4.3
• 15.4.4

License

• open-source

Website

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

CPE 2.3info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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