CVE-2026-100830

Mitigation bypass in the DOM: Navigation component

Published Sep 29, 2026 CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Description
Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4814-1 firefox-esr security update
Debian DSA Debian DSA DSA-6533-1 firefox-esr security update
History
Type Values Removed Values Added
First Time appeared Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Vendors & Products Mozilla thunderbird
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-346
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'}

Type Values Removed Values Added
Weaknesses CWE-20
CWE-284
CWE-79
Type Values Removed Values Added
Weaknesses CWE-107
CWE-272
Type Values Removed Values Added
Description Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, and Firefox 157. Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
References
Type Values Removed Values Added
Description Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157. Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, and Firefox 157.
References
Type Values Removed Values Added
Weaknesses CWE-107
CWE-272
Type Values Removed Values Added
Weaknesses CWE-79
Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Weaknesses CWE-79
Vendors & Products Mozilla
Mozilla firefox
Type Values Removed Values Added
Description Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
Title Mitigation bypass in the DOM: Navigation component
References

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Oct 1, 2026, 3:46 PM
Reserved
Sep 26, 2026, 7:19 PM
Status
Analyzed
Published
Sep 29, 2026, 1:17 PM
Modified
Oct 13, 2026, 3:28 PM