In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.
| Vendor | Product | Versions |
|---|---|---|
| roundcube | webmail | 1.6.0, 1.7.0, 1.6.16, 1.7.1 |
Updated affected versions to include 1.6.16 and 1.7.1, and marked the vulnerability as actively exploited.
Initial creation
