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.

Remediation

References

CVE-2026-35539

Related Vulnerabilities

WordPress Plugin MyBookTable Bookstore by Author Media Cross-Site Scripting (3.2.1)

Ruby Permissions, Privileges, and Access Controls Vulnerability (CVE-2011-1005)

Jenkins Incorrect Authorization Vulnerability (CVE-2018-1999047)

ownCloud Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2014-9049)

WordPress Plugin Registration Forms-User Registration Forms, Invitation-Based Registrations, Front-end User Profile, Login Form & Content Restriction Open Redirect (2.0.19)

Severity

Medium

Classification

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Tags

Missing Update Known Vulnerabilities CWE-707 CVE-2026-35539