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CVE-2026-20691

MEDIUM CVSS 3.1: 4.3 EPSS 0.03%
Updated Mar 25, 2026
Apple
Parameter Value
CVSS 4.3 (MEDIUM)
Affected Versions before 26.4
Fixed In 26.4
Type CWE-497
Vendor Apple
Public PoC No

An authorization issue was addressed with improved state management. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4, watchOS 26.4. A maliciously crafted webpage may be able to fingerprint the user.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 6

Configuration From (including) Up to (excluding)
Apple Safari
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
26.4
Apple Ipados
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
26.4
Apple Iphone_Os
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
26.4
Apple Macos
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
26.4
Apple Visionos
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
26.4
Apple Watchos
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
26.4