Description
Site isolation issue in the DOM: Web Authentication component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
Published: 2026-10-13
Score: 9.6 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 19 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-862
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

ssvc

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


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

Type Values Removed Values Added
Weaknesses CWE-200

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

Type Values Removed Values Added
Description Site isolation issue in the DOM: Web Authentication component. This vulnerability was fixed in Firefox 158. Site isolation issue in the DOM: Web Authentication component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
References

Tue, 13 Oct 2026 16:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200

Tue, 13 Oct 2026 16:30:00 +0000

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

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

Type Values Removed Values Added
Description Site isolation issue in the DOM: Web Authentication component. This vulnerability was fixed in Firefox 158.
Title Site isolation issue in the DOM: Web Authentication component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-19T20:37:24.455Z

Reserved: 2026-10-13T00:29:55.352Z

Link: CVE-2026-109750

cve-icon Vulnrichment

Updated: 2026-10-19T20:37:11.267Z

cve-icon NVD

Status : Deferred

Published: 2026-10-13T13:17:25.887

Modified: 2026-10-19T21:17:04.920

Link: CVE-2026-109750

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-20T06:30:10Z

Weaknesses