CVE-2026-109747
Deferred Deferred - Pending Action

Address Bar Spoofing Vulnerability Fixed in Firefox 158

Publication date: 2026-10-13

Last updated on: 2026-10-19

Assigner: Mozilla Corporation

Description
Other issue in the Address Bar component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-19
Generated
2026-11-08
AI Q&A
2026-10-13
EPSS Evaluated
2026-11-07
NVD
CVE-2026-109747
EUVD
EUVD-2026-98509

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 158

Helpful Resources

Exploitability

CWE
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KEV
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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.

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Executive Summary

This vulnerability is an issue in Firefox's Address Bar component. It was patched in Firefox version 158. The exact technical details are not provided in the given context.

Detection Guidance

This vulnerability is fixed in Firefox 158 and Thunderbird 158. To detect if your system is vulnerable, check the installed version of Firefox or Thunderbird. If the version is below 158, the system is likely vulnerable.

Impact Analysis

The impact is not specified in the provided context. Users of affected Firefox versions may be at risk of unspecified attacks through the Address Bar component.

Compliance Impact

The provided context does not mention compliance impacts. Without specific details on the vulnerability's nature, its effect on GDPR or HIPAA compliance cannot be determined.

Mitigation Strategies

Update Firefox to version 158 or later to address the Address Bar component vulnerability.

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