Description
In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, improper HTML/CSS sanitization of the SVG animate "by" attribute may lead to remote image blocking bypass, which in turn may lead to information disclosure or privilege escalation.
Affected products
roundcube: webmail
References3
- roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3 Vendor Advisory
- github.com/roundcube/roundcubemail/releases/tag/1.6.18 Release Notes
- github.com/roundcube/roundcubemail/releases/tag/1.7.3 Release Notes
Metrics
- CVSS 3.1
-
5.8
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N - EPSS — exploit probability
- 0% percentile: 28 · as of 11 November 2026
- CWE
- CWE-669
Could this be exploited in your environment?
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