Executive brief
The Broadstreet plugin for WordPress, which is used for managing digital advertisements, contains a security flaw that allows low-level users to perform unauthorized actions. Specifically, any logged-in user with basic 'Subscriber' permissions can create new advertiser profiles within the system. This could lead to unauthorized data entry and cluttering of the advertising management interface.
Technical details
The Broadstreet plugin for WordPress fails to implement proper authorization checks on its 'create_advertiser' AJAX action. The vulnerability is classified as Improper Authorization (CWE-285) because the code lacks a 'current_user_can()' or similar capability check before processing the request. An authenticated attacker with minimal privileges, such as a Subscriber, can send a crafted AJAX request to the server to create new advertiser entries. This issue affects all versions of the plugin up to and including 1.53.1. A patch has been identified in the plugin's changeset 3524817.
Affected products
- Broadstreet Broadstreet up to, and including, 1.53.1
Timeline
- 2026-05-13: disclosed
- 2026-05-13: advisory