CVE-2022-24895: Sensiolabs Symfony

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. When authenticating users Symfony by default regenerates the session ID upon login, but preserves the rest of session attributes. Because this does not clear CSRF tokens upon login, this might enables same-site attackers to bypass the CSRF protection mechanism by performing an attack similar to a session-fixation. This issue has been fixed in the 4.4 branch.

Affected products

• Sensiolabs Symfony: from 2.0.0, before 4.4.50 (fixed in 4.4.50); from 5.0.0, before 5.4.20 (fixed in 5.4.20); from 6.0.0, before 6.0.20 (fixed in 6.0.20); from 6.1.0, before 6.1.12 (fixed in 6.1.12); from 6.2.0, before 6.2.6 (fixed in 6.2.6)

Published 2023-02-03. Last modified 2026-06-17.