Custom Cursor For Chrome

What This Extension Does

Permissions Explained

• scripting: Allows the extension to execute scripts in web pages, which is standard for extensions that need to interact with web content.
• storage: Enables the extension to store data locally on the user's device, which is common for extensions that need to remember settings or cache data.
• unlimitedStorage: Grants unlimited storage access, which might be unusual for an extension that doesn't explicitly claim to handle large amounts of data. This could potentially allow the extension to store a significant amount of data without any limitations.
• notifications: Allows the extension to display notifications to the user, which is standard for extensions that need to alert users about certain events or updates.
• alarms: Enables the extension to schedule alarms, which might be used for periodic tasks or updates. This permission seems reasonable given the extension's functionality.
• <all_urls>: Grants access to all URLs visited by the user, including those on secure (HTTPS) and non-secure (HTTP) connections. This is a critical risk because it allows the extension to potentially intercept sensitive information from any website.

What We Found in the Code

• Function constructor used — dynamic code execution: The use of function constructors for dynamic code execution can be a legitimate pattern, especially if it's used within a controlled environment like an extension. However, without more context, this could also indicate potential misuse.
• innerHTML assignment — potential XSS vector: Assigning innerHTML directly from user input or untrusted sources is indeed a potential cross-site scripting (XSS) vulnerability. If the extension uses innerHTML for UI rendering and doesn't properly sanitize user-provided data, it could lead to security issues.
• Makes HTTP requests: Making HTTP requests is a normal operation for extensions that need to fetch resources from external servers. This flag alone does not indicate any security concerns without more context.

External Connections

• custom-cursor.com: Expected, as this could be the server hosting custom cursors.
• www.w3.org, github.com, www.facebook.com, twitter.com, discord.com, fb.me, reactjs.org, git.io, social-plugins.line.me, telegram.me, and www.pinterest.com: These domains are not directly related to the extension's functionality as described. They might be included for tracking, analytics, or other purposes that aren't immediately clear.

Things to Consider

• The permissions declared by the extension seem broad for an extension that primarily offers a visual customization option. The <all_urls> permission stands out as particularly concerning due to its potential impact on user privacy.
• The use of unlimitedStorage might be more than necessary for an extension that doesn't explicitly claim to handle large amounts of data.
• The inclusion of external domains unrelated to the extension's primary functionality could indicate additional features or tracking mechanisms not immediately apparent from the description.