PT-2026-87136 · Mozilla · Firefox For Ios

·

CVE-2026-86853

·

Published

2026-09-08

·

Updated

2026-09-08

CVSS v3.1

4.3

Medium

VectorAV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
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. This vulnerability was fixed in Firefox for iOS 155.1.

Fix

UI Misrepresentation of Critical Information

Found an issue in the description? Have something to add? Feel free to write us 👾

Weakness Enumeration

Related Identifiers

CVE-2026-86853

Affected Products

Firefox For Ios