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”.
Published: 2026-10-22
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6579-1 roundcube security update
History

Thu, 29 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
Title Remote Content Blocking Bypass via SVG SMIL 'by' Attribute in Roundcube Webmail roundcubemail: roundcubemail: Information disclosure via SVG SMIL remote content blocking bypass
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 22 Oct 2026 07:00:00 +0000

Type Values Removed Values Added
Title Remote Content Blocking Bypass via SVG SMIL 'by' Attribute in Roundcube Webmail

Thu, 22 Oct 2026 02:45:00 +0000

Type Values Removed Values Added
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”.
First Time appeared Roundcube
Roundcube webmail
Weaknesses CWE-184
CPEs cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
Vendors & Products Roundcube
Roundcube webmail
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


Subscriptions

Roundcube Webmail
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-10-26T19:39:00.590Z

Reserved: 2026-10-22T02:05:39.353Z

Link: CVE-2026-114729

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-22T03:16:38.070

Modified: 2026-10-26T20:17:50.160

Link: CVE-2026-114729

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-22T02:05:39Z

Links: CVE-2026-114729 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T06:45:17Z

Weaknesses
  • CWE-184

    Incomplete List of Disallowed Inputs