CVE-2026-43804: Visiting a website may lead to an app denial-of-service in Apple Safari
This issue was addressed through improved state management. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6. Visiting a website may lead to an app denial-of-service.
AI Analysis
Technical Summary
CVE-2026-43804 is a denial-of-service vulnerability in Apple Safari caused by improper state management when processing website content. This flaw allows an attacker to cause the Safari app to become unresponsive or crash by visiting a crafted website. The vulnerability affects Safari and Apple platforms including iOS, iPadOS, macOS Tahoe, and visionOS. Apple addressed the issue with improved state management and released fixes in Safari 26.6 and OS versions 26.6.
Potential Impact
Successful exploitation results in an application denial-of-service, causing Safari to crash or become unresponsive. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
A fix is available from Apple in Safari 26.6 and corresponding OS updates (iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6). Users and administrators should update to these versions to remediate the vulnerability. No other mitigation or workaround is indicated.
CVE-2026-43804: Visiting a website may lead to an app denial-of-service in Apple Safari
Description
This issue was addressed through improved state management. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6. Visiting a website may lead to an app denial-of-service.
CVSS v3.1
Score 6.5medium
Affected software
Apple
Safari
Apple
iOS and iPadOS
Apple
macOS
Apple
visionOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-43804 is a denial-of-service vulnerability in Apple Safari caused by improper state management when processing website content. This flaw allows an attacker to cause the Safari app to become unresponsive or crash by visiting a crafted website. The vulnerability affects Safari and Apple platforms including iOS, iPadOS, macOS Tahoe, and visionOS. Apple addressed the issue with improved state management and released fixes in Safari 26.6 and OS versions 26.6.
Potential Impact
Successful exploitation results in an application denial-of-service, causing Safari to crash or become unresponsive. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
A fix is available from Apple in Safari 26.6 and corresponding OS updates (iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6). Users and administrators should update to these versions to remediate the vulnerability. No other mitigation or workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:27.821Z
- State
- PUBLISHED
Threat ID: 6a67c1bb9c2644c7f8cb115d
Added to database: 07/27/2026, 20:38:19 UTC
Last enriched: 07/29/2026, 23:37:45 UTC
Last updated: 09/11/2026, 07:31:53 UTC
Views: 95
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