The Contact Form 7 – PayPal & Stripe Add-on by Scott Paterson contains a reflected Cross-site Scripting vulnerability due to improper input neutralization during web page generation. This flaw affects all versions up to and including 2.3. An attacker could exploit this vulnerability by crafting malicious input that is reflected in the web page response, potentially executing arbitrary scripts in the victim's browser. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and impacts on confidentiality, integrity, and availability. No patch or mitigation details are currently provided by the vendor, and no known active exploitation has been reported.

Successful exploitation of this vulnerability can allow an attacker to execute arbitrary scripts in the context of the victim's browser, potentially leading to partial compromise of confidentiality, integrity, and availability of affected systems or user data. The reflected XSS nature means the attack requires user interaction, such as clicking a crafted link. There are no reports of active exploitation in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider disabling or restricting use of the affected add-on to reduce exposure. Monitor official Scott Paterson or Contact Form 7 channels for updates and apply patches promptly once available.