CVE-2026-16371
Received Received - Intake

Privilege Escalation in Firefox DOM Navigation

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Mozilla Corporation

Description
Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.

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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-2026-16371
EUVD
EUVD-2026-46207

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
mozilla firefox From 153 (inc)
mozilla firefox_esr From 140.13 (inc)
mozilla firefox 153
mozilla firefox_esr 140.13

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 a privilege escalation vulnerability in the DOM Navigation component of Firefox. It allows an attacker to gain higher privileges than intended, potentially leading to unauthorized access or control. The issue was fixed in Firefox version 153 and Firefox ESR version 140.13.

Impact Analysis

If exploited, this vulnerability could allow an attacker to escalate their privileges on your system, potentially gaining access to sensitive data or performing unauthorized actions. Users of affected Firefox versions should update immediately to mitigate the risk.

Mitigation Strategies

Update Firefox to version 153 or later and Firefox ESR to version 140.13 or later to address the privilege escalation vulnerability in the DOM Navigation component.

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