CVE-2026-35544

CVE-2026-35544 affects Roundcube Webmail before 1.5.14 and 1.6.14. The issue is insufficient CSS sanitization in HTML emails, which may allow a fixed-position mitigation bypass via the use of !important. CVSS v3.1 base score 5.3 (Network, Low complexity, No privileges, No user interaction). The d...