CVE-2011-4718: PHP

Medium severity, CVSS 6.8. EPSS: 3.6% chance of exploitation in the next 30 days.

Session fixation vulnerability in the Sessions subsystem in PHP before 5.5.2 allows remote attackers to hijack web sessions by specifying a session ID.

Affected products

• PHP PHP: up to and including 5.5.1; version 5.0.0 only; version 5.0.1 only; version 5.0.2 only; version 5.0.3 only; version 5.0.4 only; …

Published 2013-08-13. Last modified 2026-06-16.