Joomla! 4.0.1 and 3.10.1 Security Releases Announced

joomla help support cheshire manchester merseyside north west ukDate: 24 August 2021.

The Joomla! Project has announced the release of Joomla! CMS 4.0.1 and Joomla! 3.10.1 Security Releases.

These updates address an important security vulnerability in the recently launched Joomla! 4.

Users of Joomla! 3.10 should however also update their website ASAP.

Read more: Joomla 4.0.1 and Joomla 3.10.1 Release Notes.


Heads Up

18 October 2021.

The Joomla! Project announced changes to the Update Process that users of Joomla! 2.5.1 through to 4.0.3 (and subsequent releases) need to be aware of.

These changes mean that your Joomla! CMS will in future fail to update unless you check (and if necessary amend) your installation's HTACCESS file.

Read more: Changes to Update Process that you need to be aware of.


Addressed Vulnerabilities

High Severity

Moderate Impact - Insufficient access control for com_media deletion endpoint (affecting Joomla! 4.0.0).


Back up before updating is highly recommended

Protect your assets.

Perform a FULL backup of your website (database and files) BEFORE updating the Joomla! CMS and/or its extensions.

Read more: How to back up your website.

Read more: How to update your Joomla! CMS & its extensions.


Make Joomla! CMS Security YOUR #1 Priority

joomla support cheshire manchester merseyside north west ukWe offer Joomla! coaching, help and support to businesses and organisations across Cheshire, Manchester, Merseyside, North West England & the UK.

Learn how to manage Joomla! website security.