Mitigation Strategies

To mitigate this DOM-based XSS vulnerability, avoid using the unsafe innerHTML property to render user-supplied data. Instead, use safer methods such as textContent or proper sanitization libraries to handle and display domain search results securely.

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Executive Summary

This vulnerability is a DOM-based Cross-Site Scripting (XSS) issue in the DomainCheckerApp class within domain/script.js of Sourcecodester Domain Availability Checker v1.0. It happens because the application improperly handles user-supplied data in the createResultElement method by using the unsafe innerHTML property to render domain search results, which can allow attackers to inject malicious scripts.

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Impact Analysis

This vulnerability can allow attackers to execute malicious scripts in the context of the affected application, potentially leading to theft of user data, session hijacking, or other malicious actions performed on behalf of the user.

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