CVE-2026-12302
Received Received - Intake
DOM Security Bypass in Firefox

Publication date: 2026-06-16

Last updated on: 2026-06-16

Assigner: Mozilla Corporation

Description
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, and Firefox ESR 115.37.
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Meta Information
Published
2026-06-16
Last Modified
2026-06-16
Generated
2026-06-16
AI Q&A
2026-06-16
EPSS Evaluated
N/A
NVD
EUVD
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
mozilla firefox 152
mozilla firefox_esr 140.12
mozilla firefox_esr 115.37
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Exploitability
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a mitigation bypass in the DOM (Document Object Model) security component of Mozilla Firefox. It means that a security measure designed to protect the DOM was circumvented, potentially allowing an attacker to exploit the browser in ways that were previously prevented.

The issue was addressed and fixed in Firefox version 152, Firefox ESR 140.12, and Firefox ESR 115.37.

Impact Analysis

Exploitation of this vulnerability could allow an attacker to bypass security protections in the browser's DOM, potentially leading to unauthorized actions such as executing malicious scripts, accessing sensitive information, or compromising the integrity of web content.

Mitigation Strategies

To mitigate this vulnerability, update Firefox to version 152 or later, or update Firefox ESR to version 140.12 or later, or ESR 115.37 or later.

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