CVE-2026-35539

—

CVSS 3.1

6.1 medium

EPSS

<1%p17

Published

Apr 3, 2026 (Apr 3, 2026)

Modified

Jul 24, 2026

Description

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. XSS exists because of insufficient HTML attachment sanitization in preview mode. A victim must preview a text/html attachment.

Vendors: roundcube
Products: webmail
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.3%)

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