Mozilla Foundation Security Advisory 2026-89
Security Vulnerabilities fixed in Firefox for iOS 155.1
- Announced
- September 8, 2026
- Impact
- low
- Products
- Firefox for iOS
- Fixed in
-
- Firefox for iOS 155.1
#CVE-2026-86853: Repeated external URL scheme launches could potentially cause a denial of service in Firefox for iOS
- Reporter
- Amit Gajbhare
- Impact
- low
Description
A malicious webpage could repeatedly trigger external URL schemes, causing system prompts or external application launches. This could make Firefox for iOS temporarily unusable until the page is closed.