CVE-2026-20643

A cross-origin issue in the Navigation API was addressed with improved input validation

Medium · published March 17, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
28.6
In the wild
Unconfirmed
What it is

A cross-origin issue in the Navigation API was addressed with improved input validation. This issue is fixed in Background Security Improvements for iOS, iPadOS, and macOS, 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. Processing maliciously crafted web content may bypass Same Origin Policy.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00360 · 28.6th percentile
Published
2026-03-17T22:29Z
EPSS history
Timeline
  • 17 MAR 22:29Z
    A cross-origin issue in the Navigation API was addressed with improved input validation
    cvelistv5