The Charitable WordPress plugin before 1.8.12 does not verify the authenticity of incoming Square payment webhook events in a default configuration, allowing unauthenticated attackers to forge webhook notifications that mark donations as paid without any real payment.

The Charitable WordPress plugin before 1.8.5.3 does not sanitise and escape one of its campaign image text fields before outputting it in an HTML attribute, allowing users with a high-privilege campaign-management role to perform Stored Cross-Site Scripting attacks that execute on the front-end campaign page.