roundcube: In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in...
CVE-2026-62643 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-62643, released July 18, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| roundcube · Debian 12.15 (bookworm) | 1.6.5+dfsg-1+deb12u10 | DEBIAN-CVE-2026-62643 | Jul 18, 2026 |
| roundcube · Debian 13.5 (trixie) | 1.6.17+dfsg-0+deb13u1 | DEBIAN-CVE-2026-62643 | Jul 18, 2026 |
| roundcube · Debian 14 | 1.6.17+dfsg-1 | DEBIAN-CVE-2026-62643 | Jul 18, 2026 |
| roundcubemail · opensuse-leap 16.0 | 1.6.20-bp160.1.1 | OPENSUSE-SU-2026:22195-1 | Nov 7, 2026 |
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