- The Joomla security team have released a new version of Joomla to patch a critical remote command execution vulnerability that affects all versions from 1.5 to 3.4. Browser information is not filtered properly while saving the session values into the database which leads to a remote code execution vulnerability.
- Upgrade to Joomla! CMS version 3.4.6. If you are using the old (unsupported) versions 1.5.x and 2.5.x, you have to apply the hotfixes listed in the Web references section.