Payment Button for PayPal <= 1.2.3.41 - Missing Authorization to Unauthenticated Arbitrary Order Creation

Missing Authorization
CVE CVE-2025-14463
CVSS Medium (5.3)
Publicly Published January 16, 2026
Last Updated January 17, 2026
Researcher Md. Moniruzzaman Prodhan (NomanProdhan)
Description

The Payment Button for PayPal plugin for WordPress is vulnerable to unauthorized order creation in all versions up to, and including, 1.2.3.41. This is due to the plugin exposing a public AJAX endpoint (`wppaypalcheckout_ajax_process_order`) that processes checkout results without any authentication or server-side verification of the PayPal transaction. This makes it possible for unauthenticated attackers to create arbitrary orders on the site with any chosen transaction ID, payment status, product name, amount, or customer information via direct POST requests to the AJAX endpoint, granted they can bypass basic parameter validation. If email sending is enabled, the plugin will also trigger purchase receipt emails to any email address supplied in the request, leading to order database corruption and unauthorized outgoing emails without any real PayPal transaction taking place.

References

1 affected software package

Software Type Plugin
Software Slug wp-paypal (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 1.2.3.41
Patched Version
  • 1.2.3.42
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