The Urlscan.io API Unintentionally Exposes Sensitive URLs and Data

Researchers have issued a warning about enterprise software misconfigurations that result in the leak of sensitive records on urlscan.io.

Urlscan.io is a website scanning and analysis platform. The system accepts URLs and generates a wealth of data, including domains, IP addresses, DOM information, and cookies, as well as screenshots. According to the developers, the engine’s goal is to enable “anyone to easily and confidently analyze unknown and potentially malicious websites.”

Many enterprise customers and open-source projects are supported by Urlscan.io, and an API is provided to integrate these checks into third-party products. GitHub alert Positive Security stated in a blog post published today (November 2) that the urlscan API came to its attention as a result of an email sent by GitHub in February warning customers that GitHub Pages URLs had been accidentally leaked via a third-party during metadata analysis.

“With the type of integration of this API (for example via a security tool that scans every incoming email and performs a urlscan on all links), and the amount of data in the database, there is a wide variety of sensitive data that can be searched for and retrieved by an anonymous user,” the researchers say.

Positive Security discovered that this could include urlscan.io dorks, pass

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