CVE-2026-73316

CVE-2026-73316: PayPal webhook replay XenForo before 2.3.13 processes the same valid PayPal REST webhook more than once. What happens The PayPal REST provider overrides XenForo's base transaction validator but omits its duplicate transaction-log lookup. The database index is also non-unique. Two...

CVE-2026-73314

CVE-2026-73314: Unsupported PayPal signature algorithm accepted XenForo before 2.3.13 fails open when a PayPal REST webhook names an unsupported signature algorithm. What happens The webhook handler maps PAYPAL-AUTH-ALGO through a small allowlist. If the value is unknown, the mapped algorithm...

CVE-2026-73315

CVE-2026-73315: SSRF through PayPal certificate URL XenForo before 2.3.13 fetches the certificate URL supplied by a PayPal REST webhook without restricting its destination. What happens The callback handler passes PAYPAL-CERT-URL to XenForo's trusted HTTP reader. It does not require a PayPal...

Accept Donations with PayPal <= 1.5.2 - Open Redirect

The Accept Donations with PayPal & Stripe plugin for WordPress is vulnerable to Open Redirect in all versions up to, and including, 1.5.2. This is due to insufficient validation on the redirect url supplied. This makes it possible for unauthenticated attackers to redirect users to potentially...

CVE-2026-104641

The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify that a PayPal payment notification is for a payment received by the site owner's PayPal account in its default configuration, allowing unauthenticated attackers to have their orders marked as paid using a payment made to an...

CVE-2026-104641 Simple Shopping Cart < 5.3.3 - Unauthenticated Payment Bypass via Unverified PayPal IPN Recipient

The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify that a PayPal payment notification is for a payment received by the site owner's PayPal account in its default configuration, allowing unauthenticated attackers to have their orders marked as paid using a payment made to an...

EUVD-2026-107143

The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify that a PayPal payment notification is for a payment received by the site owner's PayPal account in its default configuration, allowing unauthenticated attackers to have their orders marked as paid using a payment made to an...

CVE-2026-104641

The Simple Shopping Cart WordPress plugin, version prior to 5.3.3 , is vulnerable to an unauthenticated payment bypass . In its default configuration, the plugin fails to verify that a PayPal IPN (Instant Payment Notification) corresponds to a payment received by the site owner's specific account...

CVE-2026-104641 Simple Shopping Cart < 5.3.3 - Unauthenticated Payment Bypass via Unverified PayPal IPN Recipient

The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify that a PayPal payment notification is for a payment received by the site owner's PayPal account in its default configuration, allowing unauthenticated attackers to have their orders marked as paid using a payment made to an...

PT-2026-120500

The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify that a PayPal payment notification is for a payment received by the site owner's PayPal account in its default configuration, allowing unauthenticated attackers to have their orders marked as paid using a payment made to an...

CVE-2026-113468

The payment notification endpoint for PayPal accepts incoming data without verifying that it comes from the payment provider. Any site visitor can overwrite the stored payment notification of an order that is still awaiting payment with arbitrary content. This requires a page that contains the...

EUVD-2026-104865

The payment notification endpoint for PayPal accepts incoming data without verifying that it comes from the payment provider. Any site visitor can overwrite the stored payment notification of an order that is still awaiting payment with arbitrary content. This requires a page that contains the...

WordPress PayPal Pro <1.1.65 - SQL Injection

WordPress PayPal Pro plugin before 1.1.65 is susceptible to SQL injection via the 'query' parameter which allows for any unauthenticated user to perform SQL queries with the results output to a web page in JSON format. id: CVE-2020-14092 info: name: WordPress PayPal Pro 1.1.65 - SQL Injection...

PT-2026-118317

The payment notification endpoint for PayPal accepts incoming data without verifying that it comes from the payment provider. Any site visitor can overwrite the stored payment notification of an order that is still awaiting payment with arbitrary content. This requires a page that contains the...

CVE-2026-111409

Missing Authorization vulnerability in YITH YITH PayPal Express Checkout for WooCommerce yith-paypal-express-checkout-for-woocommerce allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects YITH PayPal Express Checkout for WooCommerce: from n/a through 1.61.0...

CVE-2026-111409 WordPress YITH PayPal Express Checkout for WooCommerce plugin <= 1.61.0 - Broken Access Control vulnerability

Missing Authorization vulnerability in YITH YITH PayPal Express Checkout for WooCommerce yith-paypal-express-checkout-for-woocommerce allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects YITH PayPal Express Checkout for WooCommerce: from n/a through 1.61.0...

EUVD-2026-102865

Missing Authorization vulnerability in YITH YITH PayPal Express Checkout for WooCommerce yith-paypal-express-checkout-for-woocommerce allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects YITH PayPal Express Checkout for WooCommerce: from n/a through 1.61.0...

CVE-2026-111409

The YITH PayPal Express Checkout for WooCommerce plugin (versions

CVE-2026-111409 WordPress YITH PayPal Express Checkout for WooCommerce plugin <= 1.61.0 - Broken Access Control vulnerability

Missing Authorization vulnerability in YITH YITH PayPal Express Checkout for WooCommerce yith-paypal-express-checkout-for-woocommerce allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects YITH PayPal Express Checkout for WooCommerce: from n/a through 1.61.0...

WordPress YITH PayPal Express Checkout for WooCommerce plugin <= 1.61.0 - Broken Access Control vulnerability

Broken Access Control vulnerability discovered by Oly Hossen in WordPress Plugin YITH PayPal Express Checkout for WooCommerce versions = 1.61.0...