CVE-2026-74998

CVE-2026-74998CVE-2026-74998

Description

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, responses from the CSS (Cascading Style Sheets) proxy were not validated, which may result in information disclosure or XSS (cross-site scripting) via MIME sniffing.

Scoring

CVSS 7.2 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Last modified2026-08-17
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.