CVE-2026-28861

MediumCVSS 4.3

Published: 25/03/2026(UTC)Updated: 15/07/2026(UTC)Translated: 16/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.31%

23th percentile - higher than 23% of all known CVEs

Summary

A logic issue in Safari and Apple systems was fixed with improved state management, preventing malicious websites from accessing script message handlers intended for other origins. The patch is included in Safari 26.4, iOS 18.7.7, iPadOS 18.7.7, iOS 26.4, iPadOS 26.4, macOS Tahoe 26.4, and visionOS 26.4.

Risk Assessment

The organization faces risk of data theft or session hijacking if a malicious website exploits this vulnerability to intercept script messages from other origins.

Recommendation

Immediately update all Apple devices to the latest versions: iOS 18.7.7, iPadOS 18.7.7, macOS Tahoe 26.4, visionOS 26.4, and Safari to version 26.4.

Original NVD description (English source)

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.