CVE-2026-86898: Opening a maliciously crafted webarchive file may lead to universal cross-site scripting in Apple Safari
A logic issue was addressed with improved state management. This issue is fixed in Safari 27, iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27. Opening a maliciously crafted webarchive file may lead to universal cross-site scripting.
AI Analysis
Technical Summary
CVE-2026-86898 is a vulnerability in Apple Safari where a logic flaw in handling webarchive files could allow an attacker to execute universal cross-site scripting (UXSS) attacks. This occurs when a user opens a specially crafted webarchive file. The issue was resolved by improving state management in Safari 27, iOS 27, iPadOS 27, macOS Golden Gate 27, and visionOS 27.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the affected browser, potentially leading to unauthorized actions or data exposure within the browser environment. However, no known exploits are reported in the wild at this time.
Mitigation Recommendations
This vulnerability is fixed in Safari 27 and the corresponding OS versions (iOS 27, iPadOS 27, macOS Golden Gate 27, visionOS 27). Users and administrators should update to these versions to mitigate the risk. No additional mitigation steps are indicated.
CVE-2026-86898: Opening a maliciously crafted webarchive file may lead to universal cross-site scripting in Apple Safari
Description
A logic issue was addressed with improved state management. This issue is fixed in Safari 27, iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27. Opening a maliciously crafted webarchive file may lead to universal cross-site scripting.
Affected software
Apple
Safari
Apple
iOS and iPadOS
Apple
macOS
Apple
visionOS
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86898 is a vulnerability in Apple Safari where a logic flaw in handling webarchive files could allow an attacker to execute universal cross-site scripting (UXSS) attacks. This occurs when a user opens a specially crafted webarchive file. The issue was resolved by improving state management in Safari 27, iOS 27, iPadOS 27, macOS Golden Gate 27, and visionOS 27.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the affected browser, potentially leading to unauthorized actions or data exposure within the browser environment. However, no known exploits are reported in the wild at this time.
Mitigation Recommendations
This vulnerability is fixed in Safari 27 and the corresponding OS versions (iOS 27, iPadOS 27, macOS Golden Gate 27, visionOS 27). Users and administrators should update to these versions to mitigate the risk. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-09-08T16:43:41.873Z
- State
- PUBLISHED
Threat ID: 6aa8611855bf5e2cf59d3057
Added to database: 09/14/2026, 21:03:20 UTC
Last enriched: 09/14/2026, 21:17:28 UTC
Last updated: 09/15/2026, 03:57:31 UTC
Views: 7
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