CVE-2026-28861

MEDIUM

Safari < 26.4 - Cross-Site Scripting via Script Message Handler Origin Confusion

Title source: llm
STIX 2.1

Description

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.

References (5)

Core 5

Scores

CVSS v3 4.3
EPSS 0.0001
EPSS Percentile 2.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (10)
Apple/iOS and iPadOS < 18.7.7
Apple/iOS and iPadOS < 26.4
apple/ipados < 18.7.7
apple/iphone_os < 18.7.7
Apple/macOS < 26.4
apple/macos < 26.4
Apple/Safari < 26.4
apple/safari < 26.4
Apple/visionOS < 26.4
apple/visionos < 26.4
Published Mar 25, 2026
Tracked Since Mar 25, 2026