CVE-2026-26079CWE-829

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

Medium · published February 11, 2026

CVSS v3.1
4.7
EPSS
1%
Percentile
47.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.7 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00589 · 47.4th percentile
Weakness
CWE-829 · Inclusion of Functionality from Untrusted Control Sphere
Published
2026-02-11T04:27Z
EPSS history
Timeline
  • 11 FEB 04:27Z
    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
    cvelistv5