Use-after-free in the Storage: Bucket File System component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-4836-1 firefox-esr security update
Debian DSA Debian DSA DSA-6560-1 firefox-esr security update
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 13 Oct 2026 23:15:00 +0000

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

Tue, 13 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


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

Type Values Removed Values Added
Description Use-after-free in the Storage: Bucket File System component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. Use-after-free in the Storage: Bucket File System component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
References

Tue, 13 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}


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

Type Values Removed Values Added
Description Use-after-free in the Storage: Bucket File System component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
Title Use-after-free in the Storage: Bucket File System component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-13T18:17:04.429Z

Reserved: 2026-10-13T00:29:46.940Z

Link: CVE-2026-109741

cve-icon Vulnrichment

Updated: 2026-10-13T14:13:40.920Z

cve-icon NVD

Status : Deferred

Published: 2026-10-13T13:17:24.693

Modified: 2026-10-13T19:18:38.143

Link: CVE-2026-109741

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-17T07:00:04Z

Weaknesses