CVE-2026-20691 — MEDIUM (4.3)

Q: How severe is CVE-2026-20691?

CVE-2026-20691 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-20691?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Safari, Apple Ipados, Apple Iphone Os, Apple Macos, Apple Visionos.

Vulnerability 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.

CVSS Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Apple	Safari	< 26.4
Apple	Ipados	< 26.4
Apple	Iphone Os	< 26.4
Apple	Macos	>= 26.0, < 26.4
Apple	Visionos	< 26.4
Apple	Watchos	< 26.4

Related Weaknesses (CWE)

CWE-497

References

https://support.apple.com/en-us/126792Release NotesVendor Advisory
https://support.apple.com/en-us/126794Release NotesVendor Advisory
https://support.apple.com/en-us/126798Release NotesVendor Advisory
https://support.apple.com/en-us/126799Release NotesVendor Advisory
https://support.apple.com/en-us/126800Release NotesVendor Advisory

FAQ

What is CVE-2026-20691?

CVE-2026-20691 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 ...

How severe is CVE-2026-20691?

CVE-2026-20691 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-20691?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Safari, Apple Ipados, Apple Iphone Os, Apple Macos, Apple Visionos.