Sandbox escape in the Messaging System component. This vulnerability affects Firefox < 147 and Thunderbird < 147.

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Fixes

Solution

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Workaround

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History

Thu, 22 Jan 2026 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
Vendors & Products Mozilla thunderbird

Thu, 15 Jan 2026 09:45:00 +0000

Type Values Removed Values Added
Description Sandbox escape in the Messaging System component. This vulnerability affects Firefox < 147. Sandbox escape in the Messaging System component. This vulnerability affects Firefox < 147 and Thunderbird < 147.
References

Wed, 14 Jan 2026 11:15:00 +0000

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

Wed, 14 Jan 2026 00:15:00 +0000


Tue, 13 Jan 2026 19:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
CWE-693
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}

ssvc

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


Tue, 13 Jan 2026 14:00:00 +0000

Type Values Removed Values Added
Description Sandbox escape in the Messaging System component. This vulnerability affects Firefox < 147.
Title Sandbox escape in the Messaging System component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-01-15T09:31:11.249Z

Reserved: 2026-01-13T13:30:54.908Z

Link: CVE-2026-0881

cve-icon Vulnrichment

Updated: 2026-01-13T18:31:21.095Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-13T14:16:38.657

Modified: 2026-01-22T18:50:33.053

Link: CVE-2026-0881

cve-icon Redhat

Severity : Important

Publid Date: 2026-01-13T13:30:55Z

Links: CVE-2026-0881 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-01-14T11:09:11Z

Weaknesses