CVE-2026-6774
Received Received - Intake
Mitigation Bypass in Firefox DOM Security Component

Publication date: 2026-04-21

Last updated on: 2026-04-22

Assigner: Mozilla Corporation

Description
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
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Meta Information
Published
2026-04-21
Last Modified
2026-04-22
Generated
2026-06-16
AI Q&A
2026-04-21
EPSS Evaluated
2026-06-14
NVD
CVE-2026-6774
EUVD
EUVD-2026-24115
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 150.0 (exc)
mozilla thunderbird to 150.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-693 The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
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Executive Summary

This vulnerability is a mitigation bypass in the DOM (Document Object Model) security component of Firefox. It means that a security measure intended to protect the DOM was circumvented, potentially allowing unintended actions or access. The issue was fixed in Firefox version 150.

Impact Analysis

Exploitation of this vulnerability could allow an attacker to bypass security protections in the DOM, potentially leading to unauthorized access or manipulation of web content within Firefox. This could result in compromised user data or browser behavior.

Mitigation Strategies

To mitigate this vulnerability, update Firefox to version 150 or later where the issue has been fixed.

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