CVE-2026-20691

MEDIUM 4.3CVE-2026-20691 · Published 25/03/2026 · updated 17/06/2026

In short

CVE-2026-20691 is a MEDIUM (CVSS 4.3) vulnerability affecting safari (apple).
Chance of exploitation in the next 30 days (EPSS): 0.29%, higher than 21.3% of all vulnerabilities.
Fix: update to 26.4 or later.

Package	Affected versions	Patched versions
safari apple	`< 26.4`	`26.4`

Description

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.

References

support.apple.com/en-us/126792 · Release Notes
support.apple.com/en-us/126794 · Release Notes
support.apple.com/en-us/126798 · Release Notes
support.apple.com/en-us/126799 · Release Notes
support.apple.com/en-us/126800 · Release Notes

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Package

Affected versions

Patched versions

safari

apple

< 26.4

26.4

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