CVE-2026-16403
Received Received - Intake

Address Bar Spoofing in Firefox

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Mozilla Corporation

Description
Spoofing issue in the Address Bar component. This vulnerability was fixed in Firefox 153.

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Meta Information

Published
2026-07-21
Last Modified
2026-07-21
Generated
2026-07-21
AI Q&A
2026-07-21
EPSS Evaluated
N/A
NVD
CVE-2026-16403
EUVD
EUVD-2026-46241

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 153

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a spoofing issue in Firefox's Address Bar component. It allows an attacker to trick users into believing they are on a legitimate website when they are actually on a malicious one. The vulnerability was patched in Firefox version 153.

Impact Analysis

This vulnerability could lead to phishing attacks where users unknowingly enter sensitive information like passwords or credit card details on fake websites. It may also enable malware downloads or other malicious activities by deceiving users.

Mitigation Strategies

Update Firefox to version 153 or later to address the spoofing issue in the Address Bar component.

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