CVE-2026-46638: Symfony Twig

High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days.

Twig is a template language for PHP. Prior to 3.26.0, {% sandbox %}{% include %} can include a template that was previously loaded outside the sandbox without re-invoking checkSecurity(), allowing the cached template to use tags, filters, and functions that should have been denied by SecurityPolicy::checkSecurity(). This issue is fixed in version 3.26.0.

Affected products

• Symfony Twig: before 3.26.0 (fixed in 3.26.0)

Published 2026-07-14. Last modified 2026-07-16.