CVE-2026-53899 | Mozilla Firefox up to 151.x on iOS cross-domain policy

June 16, 2026 Yanac

A vulnerability was found in Mozilla Firefox up to 151.x on iOS. It has been classified as problematic. This affects an unknown function. Performing a manipulation results in permissive cross-domain policy with untrusted domains.

This vulnerability was named CVE-2026-53899. The attack may be initiated remotely. There is no available exploit.

Upgrading the affected component is recommended.VulDB Recent EntriesRead More