CVE-2020-3902: Apple iCloud

Medium severity, CVSS 6.1. EPSS: 1.2% chance of exploitation in the next 30 days.

An input validation issue was addressed with improved input validation. This issue is fixed in iOS 13.4 and iPadOS 13.4, tvOS 13.4, Safari 13.1, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, iCloud for Windows 7.18. Processing maliciously crafted web content may lead to a cross site scripting attack.

Affected products

• Apple iCloud: before 10.9.3 (fixed in 10.9.3)
• Apple Ipad OS: before 13.4 (fixed in 13.4)
• Apple iPhone OS: before 13.4 (fixed in 13.4)
• Apple iTunes: before 12.10.5 (fixed in 12.10.5)
• Apple Safari: before 13.1 (fixed in 13.1)
• Apple tvOS: before 13.4 (fixed in 13.4)

Published 2020-04-01. Last modified 2026-06-17.