CVE-2026-109746: Vulnerability in Mozilla Firefox
Description
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a mitigation bypass within the Document Object Model (DOM) security component of Mozilla Firefox. The flaw could potentially allow security controls to be circumvented. Mozilla fixed this issue in Firefox 158, eliminating the vulnerability in that version and later.
Potential Impact
The vulnerability could allow attackers to bypass security mitigations in the DOM component, potentially undermining browser security protections. However, there are no reports of active exploitation in the wild.
Mitigation Recommendations
Users should update to Firefox version 158 or later to remediate this vulnerability. Since the fix is available, applying the official update fully addresses the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-10-13T00:29:51.552Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","vendor":"Mozilla"}]
Threat ID: 6ace2c4b2cdf04f65661d549
Added to database: 10/13/2026, 13:04:11 UTC
Last enriched: 10/13/2026, 13:48:30 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 3
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