CVE-2026-107844: Improper Limitation of a Pathname to a Restricted Directory

Contao is an Open Source CMS. From version 5.0.0 until 5.3.50 and 5.7.12, ImagesController joins the user-controlled path parameter to the configured image target directory with Path::join but does not use Path::isBasePath to verify that the canonical path remains inside that directory. An...