This vulnerability in Roundcube Webmail involves an incorrect resource transfer between security spheres (CWE-669) where the remote image blocking feature can be circumvented by embedding SVG content with animate attributes in an email. This flaw affects versions prior to 1.5.14 and 1.6.14, potentially allowing attackers to disclose information or bypass access controls by exploiting the SVG rendering behavior. The CVSS 3.1 base score is 5.3, indicating a medium severity with network attack vector, low attack complexity, no privileges required, and no user interaction needed.

Successful exploitation may result in information disclosure or access-control bypass within the affected Roundcube Webmail installations. This could allow an attacker to access restricted information or bypass security controls related to remote image blocking. There is no indication of impact on integrity or availability.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch is currently documented, administrators should monitor vendor communications for updates. Until a patch is available, consider disabling remote image rendering or applying other email filtering controls to mitigate potential exploitation.