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low·Misconfiguration·Updated Mar 21, 2025

Vercel File Disclosure Scanner

This scanner detects the use of Vercel File Disclosure in digital assets. It helps ensure that your Vercel configuration files remain private and secure against unwanted exposure.

Est. Time~10 seconds
Scan TypeSingle Scan
Targetsurl
CostFree
3.3k
Times Used
continuous scan runs
5.9k
Continuously Checked
assets under CS
0
Vulnerabilities Found
confirmed findings
References
Detail

Vercel is a platform widely used by developers and businesses to deploy cloud applications seamlessly. It integrates easily with several programming languages and frameworks, providing a unified workflow for building, deploying, and managing modern web applications. The platform is popular for its speed, reliability, and ease of use, catering to both small projects and enterprise-level applications. With Vercel, developers can focus on remixing interfaces in real-time for a smoother user experience. The platform's configuration files guide deployment processes and ensure applications are delivered with optimal performance and custom configurations.

Vercel Config File Disclosure allows sensitive configuration files to be publicly accessible due to improper file configuration or exposure. This vulnerability can lead to a variety of security risks, including unauthorized access to project configurations. Attackers exploiting this vulnerability might gain insights into project deployment configurations and misuse this information for malicious activities. Verifying if your Vercel configuration files are exposed on the web ensures that sensitive deployment information remains confidential. This scanner checks for publicly accessible Vercel JSON configuration files and alerts users to potential exposure.

Technical details of this vulnerability involve exposed configuration files, usually accessible through predictable paths like `/vercel.json` on deployed web assets. The configuration JSON file may contain arrays or objects with keys like `"builds"`, `"routes"`, and `"use"`, which are indicative of a Vercel setup. Scanners detect exposure by analyzing these keys and matching content types indicative of JSON application files. Without adequate access restrictions, these files can be fetched over HTTP, leading to unauthorized file access.

If malicious individuals exploit the Vercel Config File Disclosure vulnerability, they might access and potentially alter project configurations, affecting application functionality. They can glean insights into the application's structure, deployment processes, and dependencies, which can be exploited further. Misuse of disclosed configuration files can lead to unauthorized application behavior, security breaches, and data exposure. Regular monitoring and secure configurations are essential to mitigate these risks.

REFERENCES

Solution Advice
  • Ensure that configuration files are not publicly accessible on your deployed Vercel projects.
  • Review and update your Vercel settings to restrict access to sensitive files.
  • Regularly audit project configurations for potential exposure through predictable paths.
  • Implement adequate access controls and authentication for sensitive assets on your deployments.
  • Stay updated with the latest security practices recommended by Vercel and industry standards.

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Vercel File Disclosure Scanner | S4E