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roundcube

Roundcube Webmail versions before 1.6.17 and 1.7.x before 1.7.2 have insufficient sanitization of Cascading Style Sheets (CSS) in HTML email messages. This vulnerability may allow Server-Side Request Forgery (SSRF) or information disclosure if stylesheet links reference local network hosts. The issue persists due to incomplete fixes of previous vulnerabilities CVE-2026-35540 and CVE-2026-48843.

CVE-2026-62643 affects Roundcube Webmail prior to versions 1.6.17 and 1.7.2, where inadequate sanitization of CSS in HTML emails can lead to SSRF or information disclosure. Specifically, malicious CSS stylesheet links can cause the server to make unintended requests to internal network resources, potentially exposing sensitive information. This vulnerability is a result of insufficient remediation of earlier related vulnerabilities CVE-2026-35540 and CVE-2026-48843.

Roundcube Webmail versions before 1.6.17 and 1.7.x before 1.7.2 have insufficient sanitization of Cascading Style Sheets (CSS) in HTML email messages. This vulnerability may allow Server-Side Request Forgery (SSRF) or information disclosure if stylesheet links reference local network hosts. The issu

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead… (CVE-2026-62643)

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