Apple Safari 26.4: State Mgmt Logic Leak Allows Cross-Origin Script Handler
CVE-2026-28861 Published on March 25, 2026

A logic issue was addressed with improved state management. This issue is fixed in Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. A malicious website may be able to access script message handlers intended for other origins.

NVD

Vulnerability Analysis

CVE-2026-28861 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
REQUIRED
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
NONE
Availability Impact:
NONE

Products Associated with CVE-2026-28861

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Apple iOS
 
Apple iPadOS
 
Apple macOS
 
Apple visionOS
 
Apple Safari
 
Apple Ios And Ipados
 

Affected Versions

Apple Safari: Apple iOS and iPadOS: Apple macOS: Apple visionOS:

Exploit Probability

EPSS
0.04%
Percentile
10.35%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.