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

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Mar 17, 2026 · NIST NVD

   Detected

   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.

2. Jun 17, 2026 · NIST NVD

   Updated

   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.

Affected

• cpe apple/ipadosversion unspecified
• cpe apple/iphone osversion unspecified
• cpe apple/macosversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-20643

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-20643

  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. Proce

  nvd.nist.gov

References

• Reference · seclists.org
• Release Notes · support.apple.com
• Reference · support.apple.com
• Reference · support.apple.com
• Reference · support.apple.com
• Reference · support.apple.com
• Reference · support.apple.com