CVE-2026-92039: Vulnerability in Mozilla Firefox
Mitigation bypass in the DOM: Notifications component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
AI Analysis
Technical Summary
This vulnerability involves a mitigation bypass in the DOM: Notifications component of Mozilla Firefox. It was resolved by Mozilla in Firefox 156 and Firefox ESR 153.3. The vendor advisory confirms the fix and categorizes the impact as high. There is no indication of active exploitation or detailed technical exploitation methods in the advisory.
Potential Impact
The vulnerability has a high impact rating as per the Mozilla advisory, indicating that successful exploitation could lead to significant security consequences. However, no active exploitation in the wild has been reported. The exact nature of the impact beyond mitigation bypass is not detailed in the provided data.
Mitigation Recommendations
A fix is available and has been released by Mozilla in Firefox 156 and Firefox ESR 153.3. Users and administrators should update affected Firefox installations to these versions or later to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-92039: Vulnerability in Mozilla Firefox
Description
Mitigation bypass in the DOM: Notifications component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
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 in the DOM: Notifications component of Mozilla Firefox. It was resolved by Mozilla in Firefox 156 and Firefox ESR 153.3. The vendor advisory confirms the fix and categorizes the impact as high. There is no indication of active exploitation or detailed technical exploitation methods in the advisory.
Potential Impact
The vulnerability has a high impact rating as per the Mozilla advisory, indicating that successful exploitation could lead to significant security consequences. However, no active exploitation in the wild has been reported. The exact nature of the impact beyond mitigation bypass is not detailed in the provided data.
Mitigation Recommendations
A fix is available and has been released by Mozilla in Firefox 156 and Firefox ESR 153.3. Users and administrators should update affected Firefox installations to these versions or later to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-15T12:33:59.605Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-93/","vendor":"Mozilla"}]
Threat ID: 6aa93e6355bf5e2cf5d30ff7
Added to database: 09/15/2026, 12:47:31 UTC
Last enriched: 09/15/2026, 13:17:38 UTC
Last updated: 09/16/2026, 03:18:33 UTC
Views: 9
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