CVE-2026-20676
User Tracking via Safari Web Extensions Due to State Management Flaw
Publication date: 2026-02-11
Last updated on: 2026-04-02
Assigner: Apple Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| apple | ipados | to 26.3 (exc) |
| apple | iphone_os | to 26.3 (exc) |
| apple | macos | to 26.3 (exc) |
| apple | visionos | to 26.3 (exc) |
| apple | safari | to 26.3 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-400 | The product does not properly control the allocation and maintenance of a limited resource. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability involves a website's ability to track users through Safari web extensions due to insufficient state management.
The issue was addressed by improving state management and fixed in versions iOS 26.3, iPadOS 26.3, Safari 26.3, macOS Tahoe 26.3, and visionOS 26.3.
How can this vulnerability impact me? :
This vulnerability can impact users by allowing websites to track their activities through Safari web extensions, potentially compromising user privacy.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update affected Apple products to version 26.3 or later. This includes iOS, iPadOS, Safari, macOS Tahoe, and visionOS.