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CVE-2026-86853

nvd nist
Published: Sep 8, 2026Modified: Oct 5, 2026

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4.3
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Exploitability: 2.8 / Impact: 1.4
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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. This vulnerability was fixed in Firefox for iOS 155.1.

Affected (1)

Mozilla
1 product
Firefox Mobile
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Firefox Mobile
version < 155.1

Related CWEs

CWE-451
User Interface (UI) Misrepresentation of Critical Information
The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks.

References (2)

Source: security@mozilla.org
Permissions Required
Source: security@mozilla.org
Vendor Advisory

Timeline

No history available yet.