CVE-2026-26079 MEDIUM

CVE-2026-26079

Vendor Roundcube
Product Webmail
Weakness CWE-829 · Inclusion from untrusted sphere
Published February 11, 2026
Last update February 11, 2026

CVSS base score

4.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Roundcube Webmail before 1.5.13 and 1.6 before 1.6.13 allows Cascading Style Sheets (CSS) injection, e.g., because comments are mishandled.

Key dates

02Disclosure timeline

February 11, 2026 CVE published
February 11, 2026 Record updated