CVE-2026-86872: Processing maliciously crafted web content may lead to unexpected behavior in Apple Safari
Description
CVE-2026-86872 is a logic issue in Apple Safari that could cause unexpected behavior when processing maliciously crafted web content. The issue has been addressed with improved state management and fixed in Safari version 27. Users running versions earlier than 27 are affected.
Affected software
Apple
Safari
Apple
visionOS
Apple
watchOS
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a logic flaw in Apple Safari's handling of web content, which may lead to unexpected behavior when processing maliciously crafted inputs. The root cause was related to state management within the browser. Apple fixed the issue in Safari 27, as well as in visionOS 27 and watchOS 27, by improving the state management logic to prevent this unexpected behavior.
Potential Impact
The impact is unexpected behavior in Safari triggered by malicious web content. The exact consequences of this behavior are not detailed in the available information. There is no indication of active exploitation in the wild.
Mitigation Recommendations
A fix is available in Safari 27, visionOS 27, and watchOS 27. Users and administrators should update affected Apple products to these versions or later to remediate the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-09-08T16:43:41.870Z
- State
- PUBLISHED
Threat ID: 6ad6c19b2cdf04f656e4a8ab
Added to database: 10/20/2026, 01:19:23 UTC
Last enriched: 10/20/2026, 01:49:09 UTC
Last updated: 10/20/2026, 02:08:10 UTC
Views: 3
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