Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Mozilla
  • Firefox

No data.

No data.

References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2040160 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-12295 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-12295 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-57/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-58/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-58/#CVE-2026-12295 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-59/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-60/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-61/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-61/#CVE-2026-12295 cve-icon
History

Thu, 18 Jun 2026 20:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1501
CWE-285

Thu, 18 Jun 2026 17:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-693
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}

 ssvc

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

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, 18 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-653
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}

threat_severity

Important

Thu, 18 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1501
CWE-285

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

Type Values Removed Values Added
Description Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, and Firefox ESR 115.37. Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
References

Tue, 16 Jun 2026 15:15:00 +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 Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, and Firefox ESR 115.37.
Title Sandbox escape in the DOM: Navigation component
References
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-06-16T11:52:28.892Z

Updated: 2026-06-18T16:11:07.626Z

Reserved: 2026-06-15T15:08:08.316Z

Link: CVE-2026-12295

cve-icon Vulnrichment

Updated: 2026-06-18T14:22:33.003Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-06-16T13:16:29.737

Modified: 2026-06-16T17:16:33.410

Link: CVE-2026-12295

cve-icon Redhat

Severity : Important

Publid Date: 2026-06-16T11:52:28Z

Links: CVE-2026-12295 - Bugzilla