CVE-2012-5789: PayPal Payments Standard

Medium severity, CVSS 5.8. EPSS: 0.6% chance of exploitation in the next 30 days.

PayPal Payments Standard PHP Library before 20120427 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, related to intentional disabling of certificate-validation checks through a "FALSE" value.

Affected products

• PayPal Payments Standard: affected versions not specified

Published 2012-11-04. Last modified 2026-06-16.