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-2026-103324

The Cardinity Payment Gateway for WooCommerce WordPress plugin before 3.4.2 does not properly verify the authenticity of the payment notifications it receives, as the secret used to sign them is empty by default, allowing unauthenticated attackers to forge an approved-payment notification and mar...

CVE-2026-110765 FlexPrice through 2.1.38 QuickBooks Webhook Signature Verification Bypass

FlexPrice through 2.1.38 contains an authentication bypass vulnerability in HandleQuickBooksWebhook that skips signature verification when the intuit-signature header is omitted. Unauthenticated attackers knowing a tenant and environment ID can replay forged payment notifications to repeatedly ad...

CVE-2026-88998

The Tickera WordPress plugin before 3.6.0.4 does not correctly verify the integrity of incoming payment notifications, and the validated signature does not cover the order or the amount, allowing unauthenticated attackers to forge a payment confirmation and mark arbitrary orders as paid without...

EUVD-2026-100977

The Tickera WordPress plugin before 3.6.0.4 does not correctly verify the integrity of incoming payment notifications, and the validated signature does not cover the order or the amount, allowing unauthenticated attackers to forge a payment confirmation and mark arbitrary orders as paid without...

CVE-2026-88998 Tickera < 3.6.0.4 - Unauthenticated Order Payment Bypass via 2Checkout IPN

The Tickera WordPress plugin before 3.6.0.4 does not correctly verify the integrity of incoming payment notifications, and the validated signature does not cover the order or the amount, allowing unauthenticated attackers to forge a payment confirmation and mark arbitrary orders as paid without...

CVE-2026-88998 Tickera < 3.6.0.4 - Unauthenticated Order Payment Bypass via 2Checkout IPN

The Tickera WordPress plugin before 3.6.0.4 does not correctly verify the integrity of incoming payment notifications, and the validated signature does not cover the order or the amount, allowing unauthenticated attackers to forge a payment confirmation and mark arbitrary orders as paid without...

CVE-2026-103517

The Airwallex Online Payments Gateway WordPress plugin before 1.36.0 does not verify that an incoming payment notification genuinely comes from the payment provider when no webhook secret has been configured, allowing unauthenticated attackers to forge one and mark orders as paid without paying...

CVE-2026-103517: Insufficient Verification of Data Authenticity

The Airwallex Online Payments Gateway WordPress plugin before 1.36.0 does not verify that an incoming payment notification genuinely comes from the payment provider when no webhook secret has been configured, allowing unauthenticated attackers to forge one and mark orders as paid without paying...

EUVD-2026-92966

The elegro Crypto Payment WordPress plugin through 1.0.1 does not require a shared secret to be configured before trusting incoming payment notification requests, allowing unauthenticated attackers to forge payment confirmations and change the status of arbitrary orders on any installation where...

CVE-2026-93511

The Premium Packages WordPress plugin before 7.2.1 does not verify PayPal's webhook signature before processing payment and subscription notifications, allowing unauthenticated attackers to forge payment confirmations and subscription-cancellation events against any order whose transaction id the...

CVE-2026-93511 Premium Packages < 7.2.1 - Unauthenticated PayPal Webhook Signature Verification Bypass

The Premium Packages WordPress plugin before 7.2.1 does not verify PayPal's webhook signature before processing payment and subscription notifications, allowing unauthenticated attackers to forge payment confirmations and subscription-cancellation events against any order whose transaction id the...

CVE-2026-93511: Authentication Bypass by Spoofing

The Premium Packages WordPress plugin before 7.2.1 does not verify PayPal's webhook signature before processing payment and subscription notifications, allowing unauthenticated attackers to forge payment confirmations and subscription-cancellation events against any order whose transaction id the...

PT-2026-97200

Name of the Vulnerable Software and Affected Versions Premium Packages WordPress plugin versions prior to 7.2.1 Description The plugin fails to verify the signature of webhooks received from PayPal when processing payment and subscription notifications. This allows unauthenticated attackers to...

CVE-2026-91017: Insufficient Verification of Data Authenticity

The Robokassa payment gateway for Woocommerce WordPress plugin before 1.8.9 does not verify the authenticity of incoming payment notifications when its non-default deferred-payment feature is enabled, allowing unauthenticated attackers to forge a notification and mark arbitrary WooCommerce orders...

CVE-2026-12584: Undefined Security Weakness

The Payment Gateway for Redsys & WooCommerce Lite WordPress plugin before 7.0.2 does not verify the authenticity of incoming payment-provider notifications for one of its payment methods before marking orders as paid, allowing unauthenticated attackers to forge a payment-confirmation callback and...

EUVD-2026-51723

The Direct Payments for WooCommerce WordPress plugin before 2.5.3 does not verify that the requester owns the targeted WooCommerce order in several unauthenticated AJAX handlers before changing its status and overwriting its payment metadata, allowing unauthenticated attackers to tamper with othe...

CVE-2026-12966 Direct Payments for WooCommerce < 2.5.3 - Unauthenticated Cross-Customer Order Tampering via digages AJAX Actions

The Direct Payments for WooCommerce WordPress plugin before 2.5.3 does not verify that the requester owns the targeted WooCommerce order in several unauthenticated AJAX handlers before changing its status and overwriting its payment metadata, allowing unauthenticated attackers to tamper with othe...

CVE-2026-13143 WP Travel < 11.8.1 - Unauthenticated Payment Bypass via Forged PayPal IPN

The WP Travel WordPress plugin before 11.8.1 does not verify PayPal Instant Payment Notifications through the PayPal post-back handshake before marking a booking paid, allowing unauthenticated attackers to forge a notification that flips an arbitrary pending booking to a paid and booked state at ...

CVE-2026-12688 ProfileGrid < 5.9.9.7 - Unauthenticated Payment Bypass and Forced Group Membership via PayPal IPN Forgery

The ProfileGrid WordPress plugin before 5.9.9.7 does not verify PayPal IPN notifications before granting paid group membership, allowing unauthenticated attackers to forge a payment notification and mark any user as a paid member of any group without any payment being made...