---
id: CVE-2026-114729
title: >-
  Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a remote
  content blocking bypass
summary: >-
  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 HTM…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-184
vendor: Roundcube
product: Webmail
affected:
  - Webmail >= 1.6.0 < 1.6.20
  - Webmail >= 1.7.0 < 1.7.5
published: '2026-10-22'
updated: '2026-10-22'
sourceUpdated: '2026-10-22T02:05:39.669Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114729'
references:
  - url: 'https://bugs.debian.org/1151279'
  - url: >-
      https://github.com/roundcube/roundcubemail/commit/96d993b4ac57166a094b5774f4761e0b905d9a05
  - url: 'https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5'
  - url: 'https://github.com/roundcube/roundcubemail/releases/tag/1.7.5'
  - url: 'https://github.com/roundcube/roundcubemail/releases/tag/1.6.20'
  - url: >-
      https://github.com/roundcube/roundcubemail/commit/2b6ff79d8b14f94b0ff04765b7f02dbfdfe98efa
tags:
  - cve.org
ingestedAt: '2026-10-22T03:25:15.663Z'
---

## Overview

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”.

## Affected

- `Webmail >= 1.6.0 < 1.6.20`
- `Webmail >= 1.7.0 < 1.7.5`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.