Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
History

Tue, 16 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
Description Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152 and Firefox ESR 140.12. Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
References

Tue, 16 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
CWE-688
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N'}

ssvc

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


Tue, 16 Jun 2026 15:00:00 +0000

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

Tue, 16 Jun 2026 13:15:00 +0000

Type Values Removed Values Added
Description Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152 and Firefox ESR 140.12.
Title Information disclosure, sandbox escape in the Security: Process Sandboxing component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-06-16T16:08:37.133Z

Reserved: 2026-06-15T15:08:15.120Z

Link: CVE-2026-12311

cve-icon Vulnrichment

Updated: 2026-06-16T14:57:46.152Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-06-16T13:16:31.677

Modified: 2026-06-16T17:16:35.930

Link: CVE-2026-12311

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-16T14:45:15Z