PeproDev WooCommerce Receipt Uploader (PeproDev WooCommerce Receipt Uploader WordPress plugin through 2.8.0 slug: pepro-bacs-receipt-upload-for-woocommerce), all versions up to and including 2.8.0 (latest on wordpress.org; no fixed version available at the time of writing), is vulnerable to unauthenticated missing-authorization / IDOR write. Requires WooCommerce.

The PeproDev WooCommerce Receipt Uploader WordPress plugin through 2.8.0 does not verify that a requested attachment belongs to the order referenced by its access token, allowing unauthenticated attackers to forge a token and disclose image attachments, including other customers' uploaded payment receipts, that they do not own.