An authentication bypass was identifed in thelia/thelia project for customer and admin. This vulnerability is present from version 2.0.0-beta1 and is fixed in 2.1.3 and 2.2.0-alpha1.
Thelia Cross-site Scripting vulnerability in BackOffice
The BackOffice of Thelia (`error.html` template) has a cross-site scripting vulnerability in version 2.1.0 and 2.1.1 but not version 2.0.X. Version 2.1.2 contains a patch for the issue.