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”.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 7
- StatusAwaiting Analysis → PublishedNVD modified 2026-10-26 19:39
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-26 20:17
- StatusAwaiting Analysis → PublishedNVD modified 2026-10-22 02:05
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-22 16:45
- StatusReceived → PublishedNVD modified 2026-10-22 02:05
- StatusPublished → ReceivedNVD modified 2026-10-22 03:16
- First seenCVSS 5.3 · roundcubeNVD modified 2026-10-22 02:05
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 6
- https://bugs.debian.org/1151279
- https://github.com/roundcube/roundcubemail/commit/2b6ff79d8b14f94b0ff04765b7f02dbfdfe98efa
- https://github.com/roundcube/roundcubemail/commit/96d993b4ac57166a094b5774f4761e0b905d9a05
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.20
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.5
- https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5