Payment Button for PayPal Plugin up to 1.2.3.41 on WordPress AJAX Endpoint wppaypalcheckout_ajax_process_order authorization

Summaryinfo

A vulnerability identified as critical has been detected in Payment Button for PayPal Plugin up to 1.2.3.41 on WordPress. This impacts the function wppaypalcheckout_ajax_process_order of the component AJAX Endpoint. This manipulation causes authorization. This vulnerability is handled as CVE-2025-14463. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Payment Button for PayPal Plugin up to 1.2.3.41 on WordPress and classified as critical. Affected by this vulnerability is the function wppaypalcheckout_ajax_process_order of the component AJAX Endpoint. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at wordfence.com. This vulnerability is known as CVE-2025-14463. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/18/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-3152). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• WordPress Plugin

Name

• Payment Button for PayPal Plugin

Version

• 1.2.3.0
• 1.2.3.1
• 1.2.3.2
• 1.2.3.3
• 1.2.3.4
• 1.2.3.5
• 1.2.3.6
• 1.2.3.7
• 1.2.3.8
• 1.2.3.9
• 1.2.3.10
• 1.2.3.11
• 1.2.3.12
• 1.2.3.13
• 1.2.3.14
• 1.2.3.15
• 1.2.3.16
• 1.2.3.17
• 1.2.3.18
• 1.2.3.19
• 1.2.3.20
• 1.2.3.21
• 1.2.3.22
• 1.2.3.23
• 1.2.3.24
• 1.2.3.25
• 1.2.3.26
• 1.2.3.27
• 1.2.3.28
• 1.2.3.29
• 1.2.3.30
• 1.2.3.31
• 1.2.3.32
• 1.2.3.33
• 1.2.3.34
• 1.2.3.35
• 1.2.3.36
• 1.2.3.37
• 1.2.3.38
• 1.2.3.39
• 1.2.3.40
• 1.2.3.41

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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