CVE-2017-13819: Apple Mac OS X

Medium severity, CVSS 6.1. EPSS: 1% chance of exploitation in the next 30 days.

An issue was discovered in certain Apple products. macOS before 10.13.1 is affected. The issue involves the "HelpViewer" component. A cross-site scripting (XSS) vulnerability allows remote attackers to inject arbitrary web script or HTML by bypassing the Same Origin Policy for quarantined HTML documents.

Affected products

• Apple Mac OS X: up to and including 10.13.0

Published 2017-11-13. Last modified 2026-06-17.