CVE-2026-43721: A malicious website may be able to silently hijack clipboard data in Apple Safari
This issue was addressed through improved state management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious website may be able to silently hijack clipboard data.
AI Analysis
Technical Summary
CVE-2026-43721 is a medium severity vulnerability in Apple Safari and related OS versions that allows a malicious website to silently access clipboard data without user consent. The issue arises from improper state management in the browser, enabling unauthorized clipboard hijacking. This vulnerability affects Safari versions prior to 26.5.2, iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS versions prior to their respective 26.5.2 or 26.6 updates. The vulnerability is fixed by Apple in Safari 26.5.2 and corresponding OS updates.
Potential Impact
A malicious website can silently read clipboard contents, potentially exposing sensitive data copied by the user. This compromises user privacy and confidentiality of clipboard data. There is no impact on integrity or availability. Exploitation requires user interaction (e.g., visiting a malicious website). No known active exploits have been reported.
Mitigation Recommendations
A fix is available and has been released by Apple in Safari 26.5.2 and corresponding OS updates (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6). Users and administrators should update affected software to these versions or later to remediate this vulnerability.
CVE-2026-43721: A malicious website may be able to silently hijack clipboard data in Apple Safari
Description
This issue was addressed through improved state management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious website may be able to silently hijack clipboard data.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-43721 is a medium severity vulnerability in Apple Safari and related OS versions that allows a malicious website to silently access clipboard data without user consent. The issue arises from improper state management in the browser, enabling unauthorized clipboard hijacking. This vulnerability affects Safari versions prior to 26.5.2, iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS versions prior to their respective 26.5.2 or 26.6 updates. The vulnerability is fixed by Apple in Safari 26.5.2 and corresponding OS updates.
Potential Impact
A malicious website can silently read clipboard contents, potentially exposing sensitive data copied by the user. This compromises user privacy and confidentiality of clipboard data. There is no impact on integrity or availability. Exploitation requires user interaction (e.g., visiting a malicious website). No known active exploits have been reported.
Mitigation Recommendations
A fix is available and has been released by Apple in Safari 26.5.2 and corresponding OS updates (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6). Users and administrators should update affected software to these versions or later to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.645Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42d3d327e9c7971972d07e
Added to database: 06/29/2026, 20:21:39 UTC
Last enriched: 07/30/2026, 00:56:30 UTC
Last updated: 08/13/2026, 12:41:10 UTC
Views: 62
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