CVE-2026-20676

Analyzed Analyzed - Analysis Complete

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

This issue was addressed through improved state management. This issue is fixed in Safari 26.3, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. A website may be able to track users through Safari web extensions.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-02-11

Last Modified

2026-04-02

Generated

2026-07-06

AI Q&A

2026-02-12

EPSS Evaluated

2026-07-05

NVD

CVE-2026-20676

EUVD

EUVD-2026-6230

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

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

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.

Impact Analysis

This vulnerability can impact users by allowing websites to track their activities through Safari web extensions, potentially compromising user privacy.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, update affected Apple products to version 26.3 or later. This includes iOS, iPadOS, Safari, macOS Tahoe, and visionOS.

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