Package Instance

Contao Vulnerable to Cross-Site Scripting (XSS) through SVG uploads
Users can upload SVG files with malicious code, which is then executed in the back end and/or front end.

Weak Password Recovery Mechanism for Forgotten Password
Contao has a Weak Password Recovery Mechanism for a Forgotten Password.

SQL injection vulnerability
Both the search filter in the back end and the "listing" module in the front end are vulnerable to SQL injection. To exploit the vulnerability in the back end, a back end user has to be logged in, whereas the front end vulnerability can be exploited by anyone.

Cross site scripting via HTML attributes in the back end
It is possible for untrusted users to inject malicious code into HTML attributes in the back end, which will be executed both in the element preview (back end) and on the website (front end).

Installations are only affected if there are untrusted back end users who have the rights to modify HTML fields (e.g. TinyMCE).

Unrestricted Upload of File with Dangerous Type
Contao allows PHP local file inclusion. A back end user with access to the form generator can upload arbitrary files and execute them on the server.

Incorrect Default Permissions
Contao 4.0 through 4.8.5 has Insecure Permissions. Back end users can manipulate the details view URL to show pages and articles that have not been enabled for them.

PHP file inclusion vulnerability in the back end
A logged in back end user can include arbitrary PHP files by manipulating an URL parameter. Since Contao does not allow to upload PHP files in the file manager, the attack is limited to the existing PHP files on the server.

XSS in system log of back end
There's a Cross-Site Scripting (XSS) vulnerability in system log of back end. With a manipulated request, an attacker can implant a script which is executed when a logged in back end user opens the system log. The attacker themselves does not have to be logged in.