VULNERABILITY INTELLIGENCE

CVE-2026-74998

CVSS score7.2 HIGH
EPSS probability0.44%
CISA KEVNot currently listed
Published2026-08-17
Last modified2026-09-08
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

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.

Weakness classification

  • cve@mitre.org: CWE-79

Primary references