CVE-2026-25916 | Roundcube Webmail up to 1.5.12/1.6.12 SVG unprotected alternate channel

A vulnerability classified as problematic was found in Roundcube Webmail up to 1.5.12/1.6.12. This vulnerability affects unknown code of the component SVG Handler. Executing a manipulation can lead to unprotected alternate channel.

The identification of this vulnerability is CVE-2026-25916. The attack may be launched remotely. There is no exploit available.

Upgrading the affected component is advised.