CVE-2026-16400
Received Received - Intake

DOM Information Disclosure in Mozilla Firefox

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Mozilla Corporation

Description
Information disclosure in the DOM: Security 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-2026-16400
EUVD
EUVD-2026-46238

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is an information disclosure vulnerability in the DOM Security component of Firefox. It was patched in Firefox version 153. The issue allows unauthorized access to sensitive data through the Document Object Model.

Impact Analysis

An attacker could exploit this to access private information stored in the browser or displayed on web pages. This may lead to data theft, account hijacking, or exposure of sensitive user data.

Mitigation Strategies

Update Firefox to version 153 or later to address the information disclosure vulnerability in the DOM Security component.

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