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CVE-2026-74998

HIGH CVSS: 7.2 Published: 2026-08-17 Modified: 2026-08-17

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.

Affected Platforms

Unknown

Weakness Type

CWE-79

References