CVE-2026-43708: A malicious website may exfiltrate data cross-origin in Apple Safari
The issue was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. A malicious website may exfiltrate data cross-origin.
AI Analysis
Technical Summary
This vulnerability allows a malicious website to perform cross-origin data exfiltration due to insufficient input validation in Apple Safari. Apple addressed the issue by improving input validation mechanisms. The fix is included in Safari 26.5.2 and corresponding OS versions iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2.
Potential Impact
A malicious website could exploit this vulnerability to exfiltrate data from other origins, potentially leading to unauthorized data disclosure. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available and has been released by Apple in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Users and administrators should update to these versions to remediate the vulnerability.
CVE-2026-43708: A malicious website may exfiltrate data cross-origin in Apple Safari
Description
The issue was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. A malicious website may exfiltrate data cross-origin.
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability allows a malicious website to perform cross-origin data exfiltration due to insufficient input validation in Apple Safari. Apple addressed the issue by improving input validation mechanisms. The fix is included in Safari 26.5.2 and corresponding OS versions iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2.
Potential Impact
A malicious website could exploit this vulnerability to exfiltrate data from other origins, potentially leading to unauthorized data disclosure. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available and has been released by Apple in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Users and administrators should update to these versions to remediate the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.644Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42d3d227e9c7971972cf07
Added to database: 06/29/2026, 20:21:38 UTC
Last enriched: 06/29/2026, 20:51:28 UTC
Last updated: 06/29/2026, 22:57:09 UTC
Views: 5
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