Security advisories
Here you will find a list of vulnerabilities that have already been found and fixed in Contao. If you think that you have found a security issue in Contao, please report it according to our security policy.
Unrestricted file uploads
by Leo Feyer
Date: 2019-12-17
CVE ID: CVE-2019-19745
Description
A back end user with access to the form generator can upload arbitrary files and execute them on the server.
Affected versions
Contao 4.0
Contao 4.1
Contao 4.2
Contao 4.3
Contao 4.4 up to 4.4.45
Contao 4.5
Contao 4.6
Contao 4.7
Contao 4.8 up to 4.8.5
Suggested solution
Update to Contao 4.4.46 or 4.8.6.
Workaround
Configure your web server so it does not execute PHP files and other scripts in the Contao file upload directory.
