Security updates 1.6.11 and 1.5.10 released

[SKaero]

We just published security updates to the 1.6 and 1.5 LTS versions of Roundcube Webmail. They both contain a fix for recently reported security vulnerability.

Security fixes
Fix Post-Auth RCE via PHP Object Deserialization reported by firs0v.
See the full changelogs in the release notes on the Github download pages for the updated versions 1.6.11 and 1.5.10.

We strongly recommend to update all productive installations of Roundcube 1.6.x and 1.5.x with this new versions.

Source: https://roundcube.net/news/2025/06/01/security-updates-1.6.11-and-1.5.10
Get it Now: https://roundcube.net/download