CVE-2026-100830: Vulnerability in Mozilla Firefox
Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
AI Analysis
Technical Summary
CVE-2026-100830 is a mitigation bypass vulnerability in the DOM: Navigation component of Mozilla Firefox. The issue was addressed and fixed in Firefox ESR 153.4 and Firefox 157. The vendor advisory confirms the fix and categorizes the impact as high. No further technical details or exploitation methods are provided in the advisory.
Potential Impact
The vulnerability allows bypassing mitigation controls in the DOM: Navigation component, which could potentially lead to security issues in Firefox. The vendor rates the impact as high, indicating a serious security concern if unpatched.
Mitigation Recommendations
Users and administrators should update Firefox to ESR 153.4 or later, or Firefox 157 or later, where this vulnerability is fixed. No additional mitigation actions are required beyond applying the official update.
CVE-2026-100830: Vulnerability in Mozilla Firefox
Description
Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
Affected software
Mozilla
Firefox
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-100830 is a mitigation bypass vulnerability in the DOM: Navigation component of Mozilla Firefox. The issue was addressed and fixed in Firefox ESR 153.4 and Firefox 157. The vendor advisory confirms the fix and categorizes the impact as high. No further technical details or exploitation methods are provided in the advisory.
Potential Impact
The vulnerability allows bypassing mitigation controls in the DOM: Navigation component, which could potentially lead to security issues in Firefox. The vendor rates the impact as high, indicating a serious security concern if unpatched.
Mitigation Recommendations
Users and administrators should update Firefox to ESR 153.4 or later, or Firefox 157 or later, where this vulnerability is fixed. No additional mitigation actions are required beyond applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-26T19:19:00.904Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-100/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/","vendor":"Mozilla"}]
Threat ID: 6abbb3f9f7a7c541066409cd
Added to database: 09/29/2026, 12:50:01 UTC
Last enriched: 09/29/2026, 13:02:52 UTC
Last updated: 09/29/2026, 18:20:13 UTC
Views: 8
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