CVE-2011-5238: Google Checkout-PHP

Medium severity, CVSS 5.8. EPSS: 0.4% chance of exploitation in the next 30 days.

google-checkout-php-sample-code before 1.3.2 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

Affected products

• Google Checkout-PHP: up to and including 1.3.1; version 1.2 only; version 1.2.1 only; version 1.2.5 only; version 1.2.5a only; version 1.3.0 only

Published 2012-11-06. Last modified 2026-06-16.