The Sydney Toolbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the "aThemes: Portfolio" widget in all versions up to, and including, 1.31 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Sydney Toolbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the style parameter in all versions up to, and including, 1.30 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Sydney Toolbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's Filterable Gallery widget in all versions up to, and including, 1.28 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Sydney Toolbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the _id attribute of widgets in all versions up to, and including, 1.26 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Sydney Toolbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's aThemes Slider button element in all versions up to, and including, 1.25 due to insufficient input sanitization and output escaping on user supplied link. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.