Description
Mitigation bypass in the Bookmarks & History component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
Published: 2026-09-29
Score: 9.6 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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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

Thu, 01 Oct 2026 20:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20

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-693
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'}


Thu, 01 Oct 2026 05:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20

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

Type Values Removed Values Added
Weaknesses CWE-285

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

Type Values Removed Values Added
Description Mitigation bypass in the Bookmarks & History component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, and Firefox 157. Mitigation bypass in the Bookmarks & History 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 Mitigation bypass in the Bookmarks & History component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157. Mitigation bypass in the Bookmarks & History component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, and Firefox 157.
References

Wed, 30 Sep 2026 09:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-285

Wed, 30 Sep 2026 02:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
CWE-285

Tue, 29 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
CWE-285

Tue, 29 Sep 2026 17:00:00 +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 Mitigation bypass in the Bookmarks & History component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
Title Mitigation bypass in the Bookmarks & History component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-01T15:26:07.294Z

Reserved: 2026-09-26T19:18:55.211Z

Link: CVE-2026-100828

cve-icon Vulnrichment

Updated: 2026-10-01T15:25:55.188Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-09-29T13:17:48.047

Modified: 2026-10-01T16:17:30.187

Link: CVE-2026-100828

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T23:15:16Z

Weaknesses