CVE-2026-28871 — MEDIUM (4.3)

Q: How severe is CVE-2026-28871?

CVE-2026-28871 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-2026-28871?

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

Vulnerability Description

A logic issue was addressed with improved checks. 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. Visiting a maliciously crafted website may lead to a cross-site scripting attack.

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	< 18.7.7
Apple	Iphone Os	< 18.7.7
Apple	Macos	< 26.4

Related Weaknesses (CWE)

CWE-79

References

https://support.apple.com/en-us/126792Release NotesVendor Advisory
https://support.apple.com/en-us/126793Release NotesVendor Advisory
https://support.apple.com/en-us/126794Release NotesVendor Advisory
https://support.apple.com/en-us/126800Release NotesVendor Advisory

FAQ

What is CVE-2026-28871?

CVE-2026-28871 is a vulnerability with a CVSS score of 4.3 (MEDIUM). A logic issue was addressed with improved checks. 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. Visiting a maliciously crafted website m...

How severe is CVE-2026-28871?

CVE-2026-28871 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-2026-28871?

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