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CVE-2026-35544

CVE-2026-35544

CVSS 5.3 MEDIUMEPSS 0.4%CWE-669
An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to a fixed-position mitigation bypass via the use of !important.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Produtos afetados
Roundcube · Webmail

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Referências
https://github.com/roundcube/roundcubemail/commit/099009b9c8e1d3c636fb9a5af72f7c2596018662https://github.com/roundcube/roundcubemail/commit/226811a1c974271dbedca72672923abaff8191c0https://github.com/roundcube/roundcubemail/commit/57dec0c127b98e0c8e3b9c26c80049b9c4bcaea7https://github.com/roundcube/roundcubemail/releases/tag/1.5.14https://github.com/roundcube/roundcubemail/releases/tag/1.6.14https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14