CVE-2026-20691
Authorization Bypass in Safari Allows User Fingerprinting via Webpage
Publication date: 2026-03-25
Last updated on: 2026-03-25
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 26.4 (exc) |
| apple | iphone_os | to 26.4 (exc) |
| apple | macos | From 26.0 (inc) to 26.4 (exc) |
| apple | visionos | to 26.4 (exc) |
| apple | watchos | to 26.4 (exc) |
| apple | safari | to 26.4 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-497 | The product does not properly prevent sensitive system-level information from being accessed by unauthorized actors who do not have the same level of access to the underlying system as the product does. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an authorization issue related to state management in Apple software products such as Safari, iOS, iPadOS, macOS Tahoe, visionOS, and watchOS. It allows a maliciously crafted webpage to potentially fingerprint the user, which means the webpage could gather unique information about the user’s device or browsing behavior to identify or track them.
How can this vulnerability impact me? :
The impact of this vulnerability is that a malicious webpage could fingerprint users, potentially compromising their privacy by uniquely identifying or tracking them without their consent.
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 your Apple devices and software to the fixed versions: Safari 26.4, iOS 26.4, iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4, and watchOS 26.4.