CVE-2026-114729: CWE-184 Incomplete List of Disallowed Inputs in Roundcube Webmail
Description
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”.
CVSS v3.1
Score 5.3medium
Affected software
Roundcube
Webmail
pkg:github/WebmailRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-10-22T02:05:39.353Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad979904d27ba8daa217ed3
Added to database: 10/22/2026, 02:48:48 UTC
Last updated: 10/22/2026, 02:48:48 UTC
Views: 1
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