CVE-2021-27910

Cross-site Scripting in packagist/mautic/core

Identifier

CVE-2021-27910

Package Slug

packagist/mautic/core

Vulnerability

Cross-site Scripting

Description

Insufficient sanitization / filtering allows for arbitrary JavaScript Injection in Mautic using the bounce management callback function. An attacker with access to the bounce management callback function (identified with the Mailjet webhook, but it is assumed this will work uniformly across all kinds of webhooks) can inject arbitrary JavaScript Code into the error and error_related_to parameters of the POST request (POST /mailer/<product / webhook>/callback). It is noted that there is no authentication needed to access this function. The JavaScript Code is stored permanently in the web application and executed every time an authenticated user views the details page of a single contact / lead in Mautic. This means, arbitrary code can be executed to, e.g., steal or tamper with information.

Affected Versions

All versions before 3.3.4, all versions starting from 4.0.0-alpha1 before versions before 4.0.0

Solution

Upgrade to version 3.3.4, 4.0.0 or above.

Last Modified

2021-09-13

source