CVE-2026-75003

Description

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, an unclosed url() in a FuncIRI attribute of an SVG image could evade the remote image blocking, which may lead to information disclosure or privilege escalation.

Affected Platforms

Weakness Type

CWE-669

References

• https://github.com/roundcube/roundcubemail/commit/1cebea03474305d9f75a9a33d30880…
• https://github.com/roundcube/roundcubemail/commit/440277c32e6d84f3d116153af1cc84…
• https://github.com/roundcube/roundcubemail/releases/tag/1.6.18
• https://github.com/roundcube/roundcubemail/releases/tag/1.7.3
• https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3