CVE-2015-1555: Zend Framework

Critical severity, CVSS 9.1. EPSS: 1.4% chance of exploitation in the next 30 days.

Zend/Session/SessionManager in Zend Framework 2.2.x before 2.2.9, 2.3.x before 2.3.4 allows remote attackers to create valid sessions without using session validators.

Affected products

• Zend Zend Framework: version 2.2.0 only; version 2.2.1 only; version 2.2.2 only; version 2.2.3 only; version 2.2.4 only; version 2.2.5 only; …

Published 2017-08-07. Last modified 2026-06-17.