Contao security updates on November 11: How to prepare
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2 min
The Contao team has announced security updates for Contao 5.3, 5.7 and 6.0 on Wednesday, November 11, 2026. It deliberately shares no details yet. A little preparation gets you ready for the morning, and we handle it for all our maintenance clients.
What has Contao announced?
On October 29, 2026, Contao announced that the security updates will be released during the morning. They cover the 5.3, 5.7 and 6.0 lines.
Why does Contao announce only the date, not what gets fixed?
Once a fix is public, anyone can read it and work out the weakness behind it. Sites that are not updated yet would then be exposed. That is why the team names only the date first: it gives you time to prepare your backup, staging and time window. Then the update ships, and the details follow only afterwards, when updating is already possible. This coordinated disclosure (responsible disclosure) is common practice in the industry. It is no cause for worry, just a reason to block the date in your calendar.
What can you prepare now?
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Know your version
Check which Contao line and which patch version you run. -
Plan a time window
Keep the morning of November 11 free for a short update. -
Have a backup and staging ready
A fresh backup and a test environment keep the update calm. -
Update the same day
Install the update as soon as it ships.
We take care of it
If you are already a maintenance client of ours, you don't need to do anything: we install the updates for you. Not covered yet? You can simply join. What is included is on our Contao maintenance and support page.
Markus Milkereit
Founder & Lead Developer
Writes about accessibility, maintainable front-ends and the unglamarous parts of running a website well.
