Description
Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
Published: 2026-10-13
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No solution or workaround provided in the CVE record.

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Tracking

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Advisories

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History

Mon, 26 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-693
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sat, 17 Oct 2026 07:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200

Tue, 13 Oct 2026 22:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
CWE-79

Tue, 13 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox

Tue, 13 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Description Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158. Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
References

Tue, 13 Oct 2026 18:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
CWE-79

Tue, 13 Oct 2026 13:00:00 +0000

Type Values Removed Values Added
Description Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158.
Title Mitigation bypass in the DOM: Core & HTML component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-26T19:41:10.838Z

Reserved: 2026-10-13T00:49:15.410Z

Link: CVE-2026-109780

cve-icon Vulnrichment

Updated: 2026-10-26T19:22:06.918Z

cve-icon NVD

Status : Deferred

Published: 2026-10-13T13:17:28.917

Modified: 2026-10-26T20:17:47.010

Link: CVE-2026-109780

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-17T07:15:04Z

Weaknesses