CVE-2026-43700: Processing maliciously crafted web content may disclose sensitive user information in Apple Safari
A cross-origin issue was addressed with improved tracking of security origins. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may disclose sensitive user information.
AI Analysis
Technical Summary
CVE-2026-43700 is a cross-origin vulnerability in Apple Safari that could lead to disclosure of sensitive user information when processing maliciously crafted web content. The root cause was insufficient tracking of security origins, which has been improved in the fixed versions. The vulnerability affects Safari and related Apple operating systems and was resolved in version 26.5.2 for Safari, iOS, iPadOS, and macOS Tahoe.
Potential Impact
Exploitation of this vulnerability may result in unauthorized disclosure of sensitive user information due to improper handling of cross-origin web content. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available 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-2026-43700: Processing maliciously crafted web content may disclose sensitive user information in Apple Safari
Description
A cross-origin issue was addressed with improved tracking of security origins. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may disclose sensitive user information.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-43700 is a cross-origin vulnerability in Apple Safari that could lead to disclosure of sensitive user information when processing maliciously crafted web content. The root cause was insufficient tracking of security origins, which has been improved in the fixed versions. The vulnerability affects Safari and related Apple operating systems and was resolved in version 26.5.2 for Safari, iOS, iPadOS, and macOS Tahoe.
Potential Impact
Exploitation of this vulnerability may result in unauthorized disclosure of sensitive user information due to improper handling of cross-origin web content. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available 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
- 2026-05-01T22:46:21.643Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42d3d227e9c7971972ceb2
Added to database: 06/29/2026, 20:21:38 UTC
Last enriched: 06/29/2026, 20:52:13 UTC
Last updated: 06/29/2026, 22:06:54 UTC
Views: 3
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