The JetFormBuilder — Dynamic Blocks Form Builder plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.6.2. This is due to the plugin not validating that a submitted form ID belongs to a JetFormBuilder form before parsing the referenced post's content as form schema and executing an Advanced Validation server-side callback. This makes it possible for unauthenticated attackers to create a new administrator-level user account.

The JetFormBuilder Dynamic Blocks Form Builder plugin for WordPress contains a critical privilege escalation vulnerability affecting all versions up to and including 3.6.2. The flaw stems from the plugin failing to validate that a submitted form ID actually belongs to a JetFormBuilder form before parsing the referenced post content as a form schema and executing Advanced Validation server-side callbacks. This oversight allows unauthenticated remote attackers to exploit the plugin to create new administrator-level user accounts, effectively granting full site control. The vulnerability requires no authentication or special privileges to exploit, making it particularly dangerous for WordPress sites running the affected plugin versions. A patch has been released and is available via the WordPress plugin repository changeset 3575346.