CVE-2026-20691
Received Received - Intake

Authorization Bypass in Safari Allows User Fingerprinting via Webpage

Publication date: 2026-03-25

Last updated on: 2026-03-25

Assigner: Apple Inc.

Description
An authorization issue was addressed with improved state management. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4, watchOS 26.4. A maliciously crafted webpage may be able to fingerprint the user.

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Meta Information

Published
2026-03-25
Last Modified
2026-03-25
Generated
2026-07-06
AI Q&A
2026-03-25
EPSS Evaluated
2026-07-05
NVD
CVE-2026-20691
EUVD
EUVD-2026-15062

Affected Vendors & Products

Showing 6 associated CPEs
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
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KEV
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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.

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Executive Summary

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.

Impact Analysis

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.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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.

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