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


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.


Configure your web server so it does not execute PHP files and other scripts in the Contao file upload directory.

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