roundcube: An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14
CVE-2026-35544 is fixed in roundcube on 1 platform, first by DEBIAN-CVE-2026-35544, released April 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.
An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to a fixed-position mitigation bypass via the use of !important.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| roundcube · Debian 12.15 (bookworm) | 1.6.5+dfsg-1+deb12u8 | DEBIAN-CVE-2026-35544 | Apr 3, 2026 |
| roundcube · Debian 13.5 (trixie) | 1.6.15+dfsg-0+deb13u1 | DEBIAN-CVE-2026-35544 | Apr 3, 2026 |
| roundcube · Debian 14 | 1.6.14+dfsg-1 | DEBIAN-CVE-2026-35544 | Apr 3, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.