CVE-2026-46628: Symfony Twig

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

Twig is a template language for PHP. Prior to 3.26.0, the deprecated spaceless filter is registered as safe for HTML, causing Twig autoescaping to emit attacker-controlled markup unescaped when spaceless is applied to untrusted input. 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.