CVE-2026-20676: A website may be able to track users through Safari web extensions in Apple Safari
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.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20676) in Apple Safari involved improper state management that could enable websites to track users via Safari web extensions. The flaw was fixed by Apple in Safari 26.3 and related OS updates. The CVSS score is 4.3 (medium severity), indicating network attack vector with low complexity, no privileges required, user interaction needed, and limited confidentiality impact. There are no known exploits in the wild. The vulnerability does not affect cloud services and is specific to Safari browser versions prior to 26.3.
Potential Impact
The impact of this vulnerability is limited to user tracking through Safari web extensions, potentially compromising user privacy. There is no reported impact on data integrity or system availability. The vulnerability requires user interaction and can be exploited remotely over the network without privileges.
Mitigation Recommendations
Apple has released an official fix for this vulnerability in Safari 26.3 and corresponding OS updates (iOS 26.3, iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3). Users and administrators should update to these versions or later to remediate the issue. No additional mitigation steps are required beyond applying the official patches.
CVE-2026-20676: A website may be able to track users through Safari web extensions in Apple Safari
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 v3.1
Score 4.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-20676) in Apple Safari involved improper state management that could enable websites to track users via Safari web extensions. The flaw was fixed by Apple in Safari 26.3 and related OS updates. The CVSS score is 4.3 (medium severity), indicating network attack vector with low complexity, no privileges required, user interaction needed, and limited confidentiality impact. There are no known exploits in the wild. The vulnerability does not affect cloud services and is specific to Safari browser versions prior to 26.3.
Potential Impact
The impact of this vulnerability is limited to user tracking through Safari web extensions, potentially compromising user privacy. There is no reported impact on data integrity or system availability. The vulnerability requires user interaction and can be exploited remotely over the network without privileges.
Mitigation Recommendations
Apple has released an official fix for this vulnerability in Safari 26.3 and corresponding OS updates (iOS 26.3, iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3). Users and administrators should update to these versions or later to remediate the issue. No additional mitigation steps are required beyond applying the official patches.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2025-11-11T14:43:07.867Z
- Cvss Version
- null
- State
- PUBLISHED
Threat ID: 698d0dcd4b57a58fa1d96111
Added to database: 2/11/2026, 11:16:29 PM
Last enriched: 4/10/2026, 8:57:06 AM
Last updated: 6/10/2026, 4:11:00 AM
Views: 121
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