Site isolation issue in the DOM: Networking component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6533-1 firefox-esr security update
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 01 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Thu, 01 Oct 2026 16:30:00 +0000

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'}


Thu, 01 Oct 2026 03:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-285

Thu, 01 Oct 2026 01:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
CWE-284

Wed, 30 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
Description Site isolation issue in the DOM: Networking component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, and Firefox 157. Site isolation issue in the DOM: Networking component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
References

Wed, 30 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Description Site isolation issue in the DOM: Networking component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157. Site isolation issue in the DOM: Networking component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, and Firefox 157.
References

Wed, 30 Sep 2026 08:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
CWE-284

Wed, 30 Sep 2026 03:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
CWE-284

Tue, 29 Sep 2026 18:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
CWE-284

Tue, 29 Sep 2026 17:15:00 +0000

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

Tue, 29 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
Description Site isolation issue in the DOM: Networking component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
Title Site isolation issue in the DOM: Networking component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-01T15:38:57.855Z

Reserved: 2026-09-26T19:18:23.881Z

Link: CVE-2026-100816

cve-icon Vulnrichment

Updated: 2026-10-01T15:38:22.543Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-29T13:17:46.753

Modified: 2026-10-01T16:17:29.680

Link: CVE-2026-100816

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T03:15:15Z

Weaknesses