CVE-2026-46627: Symfony Twig

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Twig is a template language for PHP. Prior to 3.26.0, the Twig sandbox does not prevent a template from consuming CPU, memory, or wall-clock time, even under the strictest allow-list, allowing untrusted templates to cause resource exhaustion. This issue is addressed in version 3.26.0 by documenting that the sandbox does not protect against resource exhaustion.

Affected products

• Symfony Twig: before 3.26.0 (fixed in 3.26.0)

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