CVE-2026-35545

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.

Score

CVSS 3.1 8.2 High

Status

Analyzed - cve@mitre.org

Published

2026-04-03

Last modified

2026-04-03

Weaknesses

CWE-669

Affected products

• Webmail (Roundcube)

References

• https://github.com/roundcube/roundcubemail/commit/7ad62de184368bf42c0f522d1aacc030f5ddcc46
• https://github.com/roundcube/roundcubemail/commit/9d18d524f3cc211003fc99e2e54eed09a2f3da88
• https://github.com/roundcube/roundcubemail/commit/fe1320b199d3a2f58351bb699c9ed4316e73221b
• https://github.com/roundcube/roundcubemail/releases/tag/1.5.15
• https://github.com/roundcube/roundcubemail/releases/tag/1.6.15
• https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc6
• https://roundcube.net/news/2026/03/29/security-updates-1.7-rc6-1.6.15-1.5.15