CVE-2026-25431

The Hustle plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 7.8.14.3. Due to improper verification of user authorization, authenticated attackers with custom-level access can overwrite the site's active ESP integration credentials (AWeber, Constant Contact, Infusionsoft, ConvertKit, or HubSpot API keys) with attacker-controlled values, diverting lead submissions to the attacker's ESP tenant, and for HubSpot, irreversibly delete OAuth tokens.

The Hustle plugin (versions up to and including 7.8.14.2) contains a Missing Authorization vulnerability that allows exploitation of incorrectly configured access control security levels. This issue affects Hustle from n/a through 7.8.14.2.

The Hustle WordPress plugin before version 7.8.14.2 does not prevent shortcodes in submitted form values from being executed when it substitutes those values into the message it returns after submission, because the guard it applies can be defeated by nesting, allowing unauthenticated users to run any shortcode registered on the site.

The Hustle plugin for WordPress up to version 7.8.10.2 has an unauthorized data modification vulnerability due to a missing capability check in the 'hustle_module_converted' AJAX action. Unauthenticated attackers can forge conversion events for any Hustle module, including draft modules.