roundcube: Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a remote content blocking bypass
CVE-2026-114729 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-114729, released October 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a remote content blocking bypass. rcube_washtml inspected the SVG SMIL animation attributes `to`, `from` and values for URIs, but not `by`; so markup such as in an HTML message caused remote content to be loaded without the user's consent, disclosing the client IP address and confirming that the message was opened. Upstream fixed this in the commit “Fix remote-content blocker bypass via SVG SMIL `by` attribute”.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| roundcube · Debian 13.5 (trixie) | 1.6.20+dfsg-0+deb13u1 | DEBIAN-CVE-2026-114729 | Oct 24, 2026 |
| roundcube · Debian 14 | 1.6.20+dfsg-1 | DEBIAN-CVE-2026-114729 | Oct 24, 2026 |
| roundcubemail · Fedora 43 | 1.6.20-1.fc43 | FEDORA-2026-DB7E033531 | Nov 7, 2026 |
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