CVE-2026-35544 MEDIUM

CVE-2026-35544

Vendor Roundcube
Product Webmail
Weakness CWE-669
Published April 3, 2026
Last update April 3, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 3, 2026 CVE published
April 3, 2026 Record updated