Easy Digital Downloads Order Manipulation Vulnerability

A vulnerability allowing order manipulation has been identified in the Easy Digital Downloads plugin for WordPress, affecting all versions through 3.5.2. The issue arises from an order verification bypass, where the verification process is skipped if the POST body includes 'verification_override=1'. This attacker-supplied value enables an unauthenticated user to submit a forged Instant Payment Notification (IPN) that is accepted as verified, even on live sites with verification enabled. To exploit this vulnerability, a valid PayPal transaction ID is required, limiting the manipulation to orders made by the attacker, who must also have a customer account.

Impact

Exploitation of this vulnerability allows for unauthorized order manipulation, including the potential to alter order statuses or transaction details.

Remediation

Users are advised to update the Easy Digital Downloads plugin to version 3.5.3 or a later patched version.