We just published security updates to the 1.6 and 1.5 LTS versions of Roundcube Webmail. They both contain fixes for recently reported two security vulnerabilities.
Security fixes- Fix Cross-Site-Scripting vulnerability via SVG's animate tag reported by Valentin T., CrowdStrike.
- Fix Information Disclosure vulnerability in the HTML style sanitizer reported by somerandomdev.
See the full changelogs in the release notes on the Github download pages for the updated versions 1.6.12 (https://github.com/roundcube/roundcubemail/releases/tag/1.6.12) and 1.5.12 (https://github.com/roundcube/roundcubemail/releases/tag/1.5.12).
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/2025/12/13/security-updates-1.6.12-and-1.5.12
Get it Now: https://roundcube.net/download