Firefox Focus

Malicious scripts could display attacker-controlled web content under spoofed domains in Focus for iOS by stalling a _self navigation to an invalid port and triggering an iframe redirect, causing the UI to display a trusted domain without user interaction. This vulnerability was fixed in Focus for iOS 148.2.

Published: 2026-03-09T13:27:49.158Z
Updated: 2026-04-13T13:53:55.621Z

Dragging JavaScript links to the URL bar in Focus for iOS could be utilized to run malicious scripts, potentially resulting in XSS attacks. This vulnerability was fixed in Focus for iOS 142.

Published: 2025-08-19T20:52:51.056Z
Updated: 2026-04-13T14:28:59.196Z

Focus for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline, potentially allowing for XSS attacks. This vulnerability was fixed in Focus for iOS 142.

Published: 2025-08-19T20:52:50.397Z
Updated: 2026-04-13T14:28:57.497Z

Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An attacker within Bluetooth range could have used this to trick the user into using their passkey to log the attacker's computer into the target account. This vulnerability was fixed in Firefox for iOS 142 and Focus for iOS 142.

Published: 2025-08-19T20:52:49.748Z
Updated: 2026-04-13T14:29:00.921Z

Websites directing users to long URLs that caused eliding to occur in the location view could leverage the truncating behavior to potentially trick users into thinking they were on a different webpage. This vulnerability was fixed in Focus 138.

Published: 2025-04-30T16:30:18.670Z
Updated: 2026-04-13T14:28:36.100Z

Opening links via the contextual menu in Focus iOS for certain URL schemes would fail to load but would not refresh the toolbar correctly, allowing attackers to spoof websites if users were coerced into opening a link explicitly through a long-press. This vulnerability was fixed in Focus for iOS 143.0.

Published: 2025-09-16T12:26:39.308Z
Updated: 2026-04-13T14:29:50.967Z

Websites could utilize Javascript links to spoof URL addresses in the Focus navigation bar This vulnerability affects Focus for iOS < 130.

Published: 2024-09-03T20:07:38.036Z
Updated: 2025-03-19T15:24:15.482Z

The file scheme of URLs would be hidden, resulting in potential spoofing of a website's address in the location bar This vulnerability affects Focus for iOS < 126.

Published: 2024-05-17T18:42:24.791Z
Updated: 2024-10-28T20:14:31.596Z

Utilizing a 302 redirect, an attacker could have conducted a Universal Cross-Site Scripting (UXSS) on a victim website, if the victim had a link to the attacker's website. This vulnerability affects Focus for iOS < 123.

Published: 2024-02-22T14:56:42.004Z
Updated: 2025-03-28T18:30:43.012Z

An attacker could have executed unauthorized scripts on top origin sites using a JavaScript URI when opening an external URL with a custom Firefox scheme and a timeout race condition. This vulnerability affects Focus for iOS < 122.

Published: 2024-02-22T14:56:42.888Z
Updated: 2025-03-27T15:05:38.068Z

Focus was incorrectly allowing internal links to utilize the app scheme used for deeplinking, which could result in links potentially circumventing some URL safety checks This vulnerability affects Focus for iOS < 132.

Published: 2024-10-29T12:19:20.120Z
Updated: 2025-03-13T19:11:52.222Z

An attacker could execute unauthorized script on a legitimate site through UXSS using window.open() by opening a javascript URI leading to unauthorized actions within the user's loaded webpage. This vulnerability affects Focus for iOS < 122.

Published: 2024-01-22T18:23:25.606Z
Updated: 2025-06-20T18:39:54.589Z

Using a javascript: URI with a setTimeout race condition, an attacker can execute unauthorized scripts on top origin sites in urlbar. This bypasses security measures, potentially leading to arbitrary code execution or unauthorized actions within the user's loaded webpage. This vulnerability affects Focus for iOS < 122.

Published: 2024-01-22T18:23:24.614Z
Updated: 2025-06-20T18:39:12.533Z