CVE-2017-6099: PayPal Merchant-SDK-PHP

Medium severity, CVSS 6.1. EPSS: 1.2% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in GetAuthDetails.html.php in PayPal PHP Merchant SDK (aka merchant-sdk-php) 3.9.1 allows remote attackers to inject arbitrary web script or HTML via the token parameter.

Affected products

• PayPal Merchant-SDK-PHP: version 3.9.1 only

Published 2017-02-24. Last modified 2026-06-17.