Broadstreet vulnerabilities

The Broadstreet plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to and including 1.53.1 due to insufficient input sanitization and output escaping. This allows authenticated attackers with administrator-level permissions or higher to inject arbitrary web scripts that execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html is disabled.

The Broadstreet plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the create_advertiser AJAX action in all versions up to, and including, 1.53.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to create advertisers.

The Broadstreet plugin for WordPress in all versions up to and including 1.53.1 is vulnerable to Sensitive Information Exposure via the get_sponsored_meta() AJAX action. An authenticated attacker with subscriber-level access or higher can extract data from password-protected and private business details.