The Ultimate Classified Listings plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.4. This is due to missing or incorrect nonce validation on the update_profile function. This makes it possible for unauthenticated attackers to modify victim's email via a forged request, which might lead to account takeover, granted they can trick a user into performing an action such as clicking on a link.

The Ultimate Classified Listings plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Title parameter in all versions up to, and including, 1.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WebCodingPlace Ultimate Classified Listings allows Stored XSS.This issue affects Ultimate Classified Listings: from n/a through 1.4.

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in WebCodingPlace Ultimate Classified Listings allows PHP Local File Inclusion.This issue affects Ultimate Classified Listings: from n/a through 1.4.

The Ultimate Classified Listings WordPress plugin before 1.4 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

The Ultimate Classified Listings WordPress plugin before 1.3 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

The Ultimate Classified Listings WordPress plugin before 1.3 does not validate the `ucl_page` and `layout` parameters allowing unauthenticated users to access PHP files on the server from the listings page