CVE-2026-12501 WP Travel Engine < 6.8.2 - Unauthenticated Payment Bypass via Missing PayPal IPN Receiver and Amount Verification

The WP Travel Engine WordPress plugin before 6.8.2 does not verify that an incoming PayPal payment notification was sent to the site's configured merchant account, nor that the paid amount matches the order total, before marking a booking as paid, allowing unauthenticated attackers to mark bookin...

CVE-2026-12501

CVE-2026-12501 affects the WP Travel Engine plugin for WordPress, prior to version 6.8.2. The vulnerability arises because the plugin does not verify that an incoming PayPal IPN is sent to the site’s merchant account, nor that the paid amount matches the order total, before marking a booking as p...

CVE-2026-12501: Insufficient Verification of Data Authenticity

The WP Travel Engine WordPress plugin before 6.8.2 does not verify that an incoming PayPal payment notification was sent to the site's configured merchant account, nor that the paid amount matches the order total, before marking a booking as paid, allowing unauthenticated attackers to mark bookin...

CVE-2026-15152: Insufficient Verification of Data Authenticity

The WP Hotel Booking WordPress plugin before 2.3.2 does not verify that a payment notification corresponds to a payment made to the site's own merchant account, nor that the paid amount matches the booking total, allowing unauthenticated users to have their bookings marked as fully paid without a...

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...

CVE-2026-15147: Insufficient Verification of Data Authenticity

The Five Star Restaurant Reservations WordPress plugin before 2.7.23 does not verify the authenticity of incoming payment notifications, failing to validate the payment recipient, amount, and status or to bind the notification to the intended booking, allowing unauthenticated attackers to mark...

PT-2026-68652

Name of the Vulnerable Software and Affected Versions WP Hotel Booking WordPress plugin versions prior to 2.3.2 Description An issue exists where the plugin fails to verify if a payment notification is linked to the site's own merchant account or if the paid amount aligns with the booking total...

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

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...

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...

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...

CVE-2026-48799

Postiz is an AI social media scheduling tool. Prior to 2.21.8, Postiz fails to verify Nowpayments IPN callback authenticity against the payment provider shared secret and reads the target subscription identifier from the untrusted request body, allowing a low-privileged account to grant arbitrary...

CVE-2026-48799

CVE-2026-48799 - Postiz : An unauthenticated Nowpayments IPN callback verification flaw allows a low-privilege attacker to read the target subscription ID from the untrusted request body and grant lifetime PRO subscriptions to arbitrary organizations. Root cause: missing IPN authenticity verifica...

PT-2026-60225

Postiz is an AI social media scheduling tool. Prior to 2.21.8, Postiz fails to verify Nowpayments IPN callback authenticity against the payment provider shared secret and reads the target subscription identifier from the untrusted request body, allowing a low-privileged account to grant arbitrary...

EUVD-2026-43149

The WP Hotel Booking plugin for WordPress is vulnerable to Insufficient Verification of Data Authenticity in all versions up to, and including, 2.3.1. This is due to the webhookprocesspaypalstandard IPN handler selecting its PayPal validation endpoint from the attacker-controlled $REQUEST'testipn...

PT-2026-57410

The WP Hotel Booking plugin for WordPress is vulnerable to Insufficient Verification of Data Authenticity in all versions up to, and including, 2.3.1. This is due to the web hook process paypal standard IPN handler selecting its PayPal validation endpoint from the attacker-controlled $ REQUEST'te...

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-2026-42341

FOSSBilling is a free, open-source billing and client management system. Versions 0.6.0 through 0.7.2 have an unauthenticated payment bypass vulnerability in FOSSBilling's IPN callback endpoint. When the Custom payment adapter is enabled, an attacker can mark any unpaid invoice as paid and credit...

CVE-2026-42341 FOSSBilling has an unauthenticated payment bypass via IPN callback forgery

FOSSBilling is a free, open-source billing and client management system. Versions 0.6.0 through 0.7.2 have an unauthenticated payment bypass vulnerability in FOSSBilling's IPN callback endpoint. When the Custom payment adapter is enabled, an attacker can mark any unpaid invoice as paid and credit...

EUVD-2026-39949

The RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login plugin for WordPress is vulnerable to Authentication Bypass via Insufficient Verification of Data Authenticity in all versions up to and including 6.0.8.6. This is due to the PayPal IPN callback handler...