CVE-2026-20643Published

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…

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-20643

Published

Safari

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "Apple",
                    "product": "Safari",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "lessThan": "26.4",
                            "versionType": "custom"
                        }
                    ]
                }

iOS and iPadOS

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "Apple",
                    "product": "iOS and iPadOS",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "lessThan": "18.7.7",
                            "versionType": "custom"
                        },
                        {
                            "version": "0",
                            "status": "affected",
                            "lessThan": "26.3.1 (a)",
                            "versionType": "custom"
                        },
                        {
                            "version": "0",
                            "status": "affected",
                            "lessThan": "26.4",
                            "versionType": "custom"
                        }
                    ]
                }

macOS

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "Apple",
                    "product": "macOS",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "lessThan": "26.3.1 (a)",
                            "versionType": "custom"
                        },
                        {
                            "version": "0",
                            "status": "affected",
                            "lessThan": "26.3.2 (a)",
                            "versionType": "custom"
                        },
                        {
                            "version": "0",
                            "status": "affected",
                            "lessThan": "26.4",
                            "versionType": "custom"
                        }
                    ]
                }

visionOS

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "Apple",
                    "product": "visionOS",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "lessThan": "26.4",
                            "versionType": "custom"
                        }
                    ]
                }