CVE-2026-90922

The Paid Membership Subscriptions WordPress plugin before 3.0.9 does not verify that the amount and currency reported by the payment provider match the pending payment before completing it, allowing unauthenticated users to obtain a paid membership by paying an arbitrary lower amount...

PT-2026-83405

Name of the Vulnerable Software and Affected Versions Appointment Booking Calendar Plugin and Scheduling Plugin versions prior to 1.6.3 Description This issue occurs when the plugin fails to verify the actual amount paid against the server-side price staged for a booking during the confirmation o...

EUVD-2026-66272

The Booking Package WordPress plugin before 1.7.25 does not validate the payment amount server-side against the stored service price, deriving the expected charge from attacker-supplied request values instead, so an unauthenticated attacker can pay an arbitrary fraction of a service's real price...

CVE-2026-17016

The Accept PayPal & Stripe with Subscriptions for WooCommerce WordPress plugin through 3.1.0 does not validate the amount actually paid against the order total in its PayPal Data Transfer return handler, allowing a customer to pay less than the order total and still have the order marked as fully...

EUVD-2026-55027

The Accept PayPal & Stripe with Subscriptions for WooCommerce WordPress plugin through 3.1.0 does not validate the amount actually paid against the order total in its PayPal Data Transfer return handler, allowing a customer to pay less than the order total and still have the order marked as fully...

CVE-2026-17016 Restore PayPal Standard for WooCommerce <= 3.1.0 - Payment Bypass via PDT Underpayment

The Accept PayPal & Stripe with Subscriptions for WooCommerce WordPress plugin through 3.1.0 does not validate the amount actually paid against the order total in its PayPal Data Transfer return handler, allowing a customer to pay less than the order total and still have the order marked as fully...

CVE-2026-17016

The Accept PayPal & Stripe with Subscriptions for WooCommerce WordPress plugin through 3.1.0 does not validate the amount actually paid against the order total in its PayPal Data Transfer return handler, allowing a customer to pay less than the order total and still have the order marked as fully...

CVE-2026-17016 Restore PayPal Standard for WooCommerce <= 3.1.0 - Payment Bypass via PDT Underpayment

The Accept PayPal & Stripe with Subscriptions for WooCommerce WordPress plugin through 3.1.0 does not validate the amount actually paid against the order total in its PayPal Data Transfer return handler, allowing a customer to pay less than the order total and still have the order marked as fully...

CVE-2026-17016

The Accept PayPal & Stripe with Subscriptions for WooCommerce WordPress plugin, version 3.1.0 and below , is vulnerable to a payment bypass due to a lack of validation in its PayPal Data Transfer return handler . When the PayPal Data Transfer feature is enabled, the plugin fails to verify the amo...

CVE-2026-17016: Improper Access Control

The Accept PayPal & Stripe with Subscriptions for WooCommerce WordPress plugin through 3.1.0 does not validate the amount actually paid against the order total in its PayPal Data Transfer return handler, allowing a customer to pay less than the order total and still have the order marked as fully...

CVE-2026-11567

The SureForms WordPress plugin before 2.11.1 does not properly validate the payment amount on forms that use a dynamically-sourced variable/hidden payment amount, allowing unauthenticated users to underpay for the configured product or subscription. Forms using a fixed configured price are not...

CVE-2026-11567

The SureForms WordPress plugin before 2.11.1 does not properly validate the payment amount on forms that use a dynamically-sourced variable/hidden payment amount, allowing unauthenticated users to underpay for the configured product or subscription. Forms using a fixed configured price are not...

CVE-2026-11567 SureForms < 2.11.1 - Unauthenticated Payment Amount Bypass

The SureForms WordPress plugin before 2.11.1 does not properly validate the payment amount on forms that use a dynamically-sourced variable/hidden payment amount, allowing unauthenticated users to underpay for the configured product or subscription. Forms using a fixed configured price are not...

EUVD-2026-43625

The SureForms WordPress plugin before 2.11.1 does not properly validate the payment amount on forms that use a dynamically-sourced variable/hidden payment amount, allowing unauthenticated users to underpay for the configured product or subscription. Forms using a fixed configured price are not...

CVE-2026-11567

The SureForms WordPress plugin, in versions prior to 2.11.1 , is vulnerable to an unauthenticated payment amount bypass. The root cause is a failure to properly validate payment amounts on forms that utilize dynamically-sourced (variable/hidden) values. This allows unauthenticated users to underp...

PT-2026-57964

The SureForms WordPress plugin before 2.11.1 does not properly validate the payment amount on forms that use a dynamically-sourced variable/hidden payment amount, allowing unauthenticated users to underpay for the configured product or subscription. Forms using a fixed configured price are not...

CVE-2026-43928

FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the PayPalEmail payment adapter accepts PayPal IPN callbacks and credits the IPN-supplied amount mcgross to the client's balance without validating it against the invoice total. Combined with a $0.05...

CVE-2026-43928 FOSSBilling: Payment amount not validated in PayPalEmail adapter allows invoice underpayment

FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the PayPalEmail payment adapter accepts PayPal IPN callbacks and credits the IPN-supplied amount mcgross to the client's balance without validating it against the invoice total. Combined with a $0.05...

CVE-2026-43928 FOSSBilling: Payment amount not validated in PayPalEmail adapter allows invoice underpayment

FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the PayPalEmail payment adapter accepts PayPal IPN callbacks and credits the IPN-supplied amount mcgross to the client's balance without validating it against the invoice total. Combined with a $0.05...

CVE-2026-43928 FOSSBilling: Payment amount not validated in PayPalEmail adapter allows invoice underpayment

FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the PayPalEmail payment adapter accepts PayPal IPN callbacks and credits the IPN-supplied amount mcgross to the client's balance without validating it against the invoice total. Combined with a $0.05...