CVE-2018-13818: Symfony Twig

Critical severity, CVSS 9.8. EPSS: 6.9% chance of exploitation in the next 30 days.

Twig before 2.4.4 allows Server-Side Template Injection (SSTI) via the search search_key parameter. NOTE: the vendor points out that Twig itself is not a web application and states that it is the responsibility of web applications using Twig to properly wrap input to it

Affected products

• Symfony Twig: before 2.4.4 (fixed in 2.4.4)

Published 2018-07-10. Last modified 2026-06-17.