Description
An issue was discovered in Roundcube Webmail before 1.5.15 and 1.6.15. The remote image blocking feature can be bypassed via SVG content in an e-mail message. This may lead to information disclosure or access-control bypass. This involves the animate element with attributeName=fill/filter/stroke.
Affected products
roundcube: webmail
References7
- roundcube.net/news/2026/03/29/security-updates-1.7-rc6-1.6.15-1… Vendor Advisory
- github.com/roundcube/roundcubemail/commit/7ad62de184368bf42c0f5… Patch
- github.com/roundcube/roundcubemail/commit/9d18d524f3cc211003fc9… Patch
- github.com/roundcube/roundcubemail/commit/fe1320b199d3a2f58351b… Patch
- github.com/roundcube/roundcubemail/releases/tag/1.5.15 Release Notes
- github.com/roundcube/roundcubemail/releases/tag/1.6.15 Release Notes
- github.com/roundcube/roundcubemail/releases/tag/1.7-rc6 Release Notes
Metrics
- CVSS 3.1
-
8.2
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N - EPSS — exploit probability
- 0% percentile: 36 · as of 12 November 2026
- CWE
- CWE-669
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.