WordPress Payment Button for PayPal plugin <= 1.2.3.44 - Unauthenticated Payment Price Manipulation vulnerability

Unauthenticated Payment Price Manipulation vulnerability discovered by Muni Nitish Kumar Yaddala in WordPress Plugin Payment Button for PayPal versions = 1.2.3.44...

CVE-2026-16990

The Payment Button for PayPal WordPress plugin through 1.2.3.44 does not enforce the merchant-configured price server-side and trusts a client-supplied payment amount, allowing unauthenticated attackers to create a real PayPal order against the merchant for an arbitrary lower amount...

CVE-2026-16990 Payment Button for PayPal <= 1.2.3.44 - Unauthenticated Payment Price Manipulation

The Payment Button for PayPal WordPress plugin through 1.2.3.44 does not enforce the merchant-configured price server-side and trusts a client-supplied payment amount, allowing unauthenticated attackers to create a real PayPal order against the merchant for an arbitrary lower amount...

CVE-2026-16990

The CVE concerns the WordPress plugin “Payment Button for PayPal” (versions up to 1.2.3.44). The root cause is that the plugin does not enforce the merchant-configured price server-side and trusts the amount provided by the client, enabling unauthenticated attackers to create a real PayPal order ...

CVE-2026-16990 Payment Button for PayPal <= 1.2.3.44 - Unauthenticated Payment Price Manipulation

The Payment Button for PayPal WordPress plugin through 1.2.3.44 does not enforce the merchant-configured price server-side and trusts a client-supplied payment amount, allowing unauthenticated attackers to create a real PayPal order against the merchant for an arbitrary lower amount...

CVE-2026-16990

The Payment Button for PayPal WordPress plugin through 1.2.3.44 does not enforce the merchant-configured price server-side and trusts a client-supplied payment amount, allowing unauthenticated attackers to create a real PayPal order against the merchant for an arbitrary lower amount...

EUVD-2026-57175

The Payment Button for PayPal WordPress plugin through 1.2.3.44 does not enforce the merchant-configured price server-side and trusts a client-supplied payment amount, allowing unauthenticated attackers to create a real PayPal order against the merchant for an arbitrary lower amount...

CVE-2026-16990: Undefined Security Weakness

The Payment Button for PayPal WordPress plugin through 1.2.3.44 does not enforce the merchant-configured price server-side and trusts a client-supplied payment amount, allowing unauthenticated attackers to create a real PayPal order against the merchant for an arbitrary lower amount...

PT-2026-71054

The Payment Button for PayPal WordPress plugin through 1.2.3.44 does not enforce the merchant-configured price server-side and trusts a client-supplied payment amount, allowing unauthenticated attackers to create a real PayPal order against the merchant for an arbitrary lower amount...

CVE-2025-14463: Missing Authorization

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 wppaypalcheckoutajaxprocessorder that processes checkout results without any authentication or...

CVE-2024-13401: Improper Neutralization of Input During Web Page Generation

The Payment Button for PayPal plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wppaypalcheckout' shortcode in all versions up to, and including, 1.2.3.35 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possib...