Invision Community <=5.0.6 Unauthenticated RCE via Template Injection

Invision Community 5.0.0 before 5.0.7 allows remote code execution via crafted template strings to themeeditor.php. The issue lies within the themeeditor controller /applications/core/modules/front/system/themeeditor.php, where a protected method named customCss can be invoked by unauthenticated...