Vulnerabilities and security researches forcontact-form-7-paypal-add-on contact-form-7-paypal-add-on

Jun 07, 2024

CVE, Research URL: CVE-2024-29130
Home page URL: Security reports for Contact Form 7 – PayPal & Stripe Add-on
Application: Contact Form 7 – PayPal & Stripe Add-on
Date: Mar 19, 2024
Research Description: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Scott Paterson Contact Form 7 – PayPal & Stripe Add-on allows Reflected XSS.This issue affects Contact Form 7 – PayPal & Stripe Add-on: from n/a through 2.0.
Affected versions: max 2.1.
Status: vulnerable

CVE, Research URL: CVE-2023-24405
Home page URL: Security reports for Contact Form 7 – PayPal & Stripe Add-on
Application: Contact Form 7 – PayPal & Stripe Add-on
Date: Jul 10, 2023
Research Description: Cross-Site Request Forgery (CSRF) vulnerability in Scott Paterson Contact Form 7 – PayPal & Stripe Add-on plugin <= 1.9.3 versions.
Affected versions: max 1.9.4.
Status: vulnerable

CVE, Research URL: CVE-2024-1719
Home page URL: Security reports for Contact Form 7 – PayPal & Stripe Add-on
Application: Contact Form 7 – PayPal & Stripe Add-on
Date: Feb 28, 2024
Research Description: The Easy PayPal & Stripe Buy Now Button plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.8.3 and in Contact Form 7 – PayPal & Stripe Add-on all versions up to, and including 2.1. This is due to missing or incorrect nonce validation on the 'wpecpp_stripe_connect_completion' function. This makes it possible for unauthenticated attackers to modify the plugins settings and chance the stripe connection via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Affected versions: max 2.2.
Status: vulnerable

Oct 12, 2024

CVE, Research URL: CVE-2024-48021
Home page URL: Security reports for Contact Form 7 – PayPal & Stripe Add-on
Application: Contact Form 7 – PayPal & Stripe Add-on
Date: Oct 17, 2024
Research Description: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Scott Paterson Contact Form 7 – PayPal & Stripe Add-on allows Reflected XSS.This issue affects Contact Form 7 – PayPal & Stripe Add-on: from n/a through 2.3.
Affected versions: max 2.3.1.
Status: vulnerable

Nov 10, 2024

CVE, Research URL: CVE-2024-10683
Home page URL: Security reports for Contact Form 7 – PayPal & Stripe Add-on
Application: Contact Form 7 – PayPal & Stripe Add-on
Date: Nov 09, 2024
Research Description: The Contact Form 7 – PayPal & Stripe Add-on plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg & remove_query_arg without appropriate escaping on the URL in all versions up to, and including, 2.3.1. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. This is only exploitable when the leave a review notice is present in the dashboard.
Affected versions: max 2.3.2.
Status: vulnerable

May 09, 2025

CVE, Research URL: CVE-2025-47518
Home page URL: Security reports for Contact Form 7 – PayPal & Stripe Add-on
Application: Contact Form 7 – PayPal & Stripe Add-on
Date: May 07, 2025
Research Description: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Scott Paterson Contact Form 7 – PayPal & Stripe Add-on allows Stored XSS. This issue affects Contact Form 7 – PayPal & Stripe Add-on: from n/a through 2.3.4.
Affected versions: max 2.4.1.
Status: vulnerable

May 30, 2026

CVE, Research URL: CVE-2026-9189
Home page URL: Security reports for Contact Form 7 – PayPal & Stripe Add-on
Application: Contact Form 7 – PayPal & Stripe Add-on
Date: May 29, 2026
Research Description: The Contact Form 7 – PayPal & Stripe Add-on plugin for WordPress is vulnerable to Payment Bypass via Insufficient Verification of Data Authenticity in all versions up to, and including, 2.4.9. Although `cf7pp_paypal_ipn_handler()` correctly validates IPN authenticity by posting back to PayPal with `cmd=_notify-validate`, it fails to compare the IPN payload's `mc_gross` (payment amount), `mc_currency`, or `receiver_email` fields against the corresponding stored order values before passing the attacker-controlled `invoice` field directly to `cf7pp_complete_payment()`, which marks the order completed after only an integer cast with no amount verification. This makes it possible for unauthenticated attackers to mark arbitrary high-value pending orders as fully paid by making a minimal real PayPal payment and crafting an IPN whose `invoice` parameter references the targeted order, effectively completing purchases without tendering the required payment amount.
Affected versions: max 2.4.10.
Status: vulnerable