CVE-2019-8754: Apple Mac OS X

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

A cross-origin issue existed with "iframe" elements. This was addressed with improved tracking of security origins. This issue is fixed in macOS Catalina 10.15.1, Security Update 2019-001, and Security Update 2019-006. A malicious HTML document may be able to render iframes with sensitive user information.

Affected products

• Apple Mac OS X: before 10.15.1 (fixed in 10.15.1)

Published 2020-10-27. Last modified 2026-06-17.