CVE-2026-35545: Roundcube Webmail: Remote image blocking feature can be bypassed via SVG content in an e-mail message
(updated )
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.
References
- github.com/advisories/GHSA-w846-74jr-76cv
- github.com/roundcube/roundcubemail
- github.com/roundcube/roundcubemail/commit/7ad62de184368bf42c0f522d1aacc030f5ddcc46
- github.com/roundcube/roundcubemail/commit/9d18d524f3cc211003fc99e2e54eed09a2f3da88
- github.com/roundcube/roundcubemail/commit/fe1320b199d3a2f58351bb699c9ed4316e73221b
- github.com/roundcube/roundcubemail/releases/tag/1.5.15
- github.com/roundcube/roundcubemail/releases/tag/1.6.15
- github.com/roundcube/roundcubemail/releases/tag/1.7-rc6
- nvd.nist.gov/vuln/detail/CVE-2026-35545
- roundcube.net/news/2026/03/29/security-updates-1.7-rc6-1.6.15-1.5.15
Code Behaviors & Features
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