What’s Vulnerable › Vulnerabilities

CVE-2019-8827

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-27 · updated 2026-06-17

Description

The HTTP referrer header may be used to leak browsing history. The issue was resolved by downgrading all third party referrers to their origin. This issue is fixed in Safari 13.0.3, iTunes 12.10.2 for Windows, iCloud for Windows 10.9.2, tvOS 13.2, iOS 13.2 and iPadOS 13.2, iCloud for Windows 7.15. Visiting a maliciously crafted website may reveal the sites a user has visited.

Affected products

• Apple iCloud for Windows: before 7.15; from 10.0 before 10.9.2 — fixed in 10.9.2, 7.15
• Apple iPadOS: before 13.2 — fixed in 13.2
• Apple Iphone Os: before 13.2 — fixed in 13.2
• Apple iTunes for Windows: before 12.10.2 — fixed in 12.10.2
• Apple Safari: before 13.0.3 — fixed in 13.0.3
• Apple tvOS: before 13.2 — fixed in 13.2

How to fix

Upgrade to a fixed version: Apple iCloud for Windows 10.9.2, 7.15; Apple iPadOS 13.2; Apple Iphone Os 13.2; Apple iTunes for Windows 12.10.2; Apple Safari 13.0.3; Apple tvOS 13.2. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT210721
• https://support.apple.com/en-us/HT210723
• https://support.apple.com/en-us/HT210725
• https://support.apple.com/en-us/HT210726
• https://support.apple.com/en-us/HT210728
• https://support.apple.com/en-us/HT210947
• https://support.apple.com/en-us/HT210721
• https://support.apple.com/en-us/HT210723
• https://support.apple.com/en-us/HT210725
• https://support.apple.com/en-us/HT210726
• https://support.apple.com/en-us/HT210728
• https://support.apple.com/en-us/HT210947

Get alerted when CVE-2019-8827 or the next vulnerability affects your stack