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.

https://github.com/roundcube/roundcubemail/releases/tag/1.6.11 https://github.com/roundcube/roundcubemail/releases/tag/1.5.10

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