CVE-2026-35543

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via SVG content (with animate attributes) in an e-mail message. This may lead to information disclosure or access-control bypass.

• CWE-669

• https://github.com/roundcube/roundcubemail/commit/1a63e01542bff42aaa71c00c4c279a09ef31f20cPatch
• https://github.com/roundcube/roundcubemail/commit/39471343ee081ce1d31696c456a2c163462daae3Patch
• https://github.com/roundcube/roundcubemail/commit/82ab5eca7b332fce7a174b2b987f0957a66377cdPatch
• https://github.com/roundcube/roundcubemail/releases/tag/1.5.14Release Notes
• https://github.com/roundcube/roundcubemail/releases/tag/1.6.14Release Notes
• https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5Release Notes
• https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14Vendor Advisory

Published

Apr 3, 2026

Last Modified

Jul 24, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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