Mautic before 3.2.4 is affected by stored XSS. An attacker with permission to manage companies, an application feature, could attack other users, including administrators. For example, by loading an externally crafted JavaScript file, an attacker could eventually perform actions as the target user. These actions include changing the user passwords, altering user or email addresses, or adding a new administrator to the system.
Mautic versions 1.0.0 - 2.11.0 are vulnerable to allowing any authorized Mautic user session (must be logged into Mautic) to use the Filemanager to download any file from the server that the web user has access to.
Mautic version 2.1.0 - 2.11.0 is vulnerable to an inline JS XSS attack when using Mautic forms on a Mautic landing page using GET parameters to pre-populate the form.