Contao 4.9.23, a new version of the Contao open source CMS, has been released.

This release fixes duplicate GUIDs in the produced RSS feed for repeating events and now correctly removes uploaded files from the file system if the submitted form does not validate. Moreover, we now have a more resilient database platform detection and a longstanding issue with back end referrer management has been fixed so you should get redirected to the place you were coming from more reliably. Also, the back end preview links should now work again.

Changelog of the fixed issues in Contao 4.9.23:

About Contao 4.9 LTS

The first stable version of Contao 4.9 has been released on February 18, 2020, replacing Contao 4.4 as the long term support version. As an LTS version, 4.9 has been be provided with bug fixes until February 14, 2023 and security-related updates until February 14, 2024. Contao 4.13 was the next LTS version of Contao and has been released in February 2022, ensuring a stress-free transition.

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