CVE-2026-2634
Address Bar Desynchronization in Firefox iOS Enables URL Spoofing
Publication date: 2026-02-24
Last updated on: 2026-04-13
Assigner: Mozilla Corporation
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mozilla | firefox | to 147.4 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-451 | 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability in Firefox for iOS versions before 147.4 involves malicious scripts causing a desynchronization between the address bar and the web content before a response is fully received.
As a result, attacker-controlled pages can be displayed under spoofed, trusted domain names, misleading users about the actual website they are visiting.
How can this vulnerability impact me? :
This vulnerability can lead to users being shown spoofed web pages that appear to be from trusted domains, potentially tricking them into divulging sensitive information or performing unintended actions.
Such spoofing can facilitate phishing attacks, credential theft, or other malicious activities by exploiting the mismatch between the displayed URL and the actual content.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should update Firefox for iOS to version 147.4 or later, where the issue has been fixed.