CVE-2019-8649: Apple iCloud

Medium severity, CVSS 6.1. EPSS: 4.5% chance of exploitation in the next 30 days.

A logic issue existed in the handling of synchronous page loads. This issue was addressed with improved state management. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, Safari 12.1.2, iTunes for Windows 12.9.6, iCloud for Windows 7.13, iCloud for Windows 10.6. Processing maliciously crafted web content may lead to universal cross site scripting.

Affected products

• Apple iCloud: before 7.13 (fixed in 7.13); from 10.0, before 10.6 (fixed in 10.6)
• Apple iPhone OS: before 12.4 (fixed in 12.4)
• Apple iTunes: before 12.9.6 (fixed in 12.9.6)
• Apple Mac OS X: before 10.14.6 (fixed in 10.14.6)
• Apple Safari: before 12.1.2 (fixed in 12.1.2)
• Apple tvOS: before 12.4 (fixed in 12.4)

Published 2019-12-18. Last modified 2026-06-17.