Same-origin policy bypass in the Request Handling component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Mozilla
  • Firefox
  • Firefox Esr
  • Thunderbird

Configuration 1 [-]

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*

No data.

References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2000218 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-14331 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-14331 cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-92/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-93/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-94/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-94/#CVE-2025-14331 cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-95/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-96/ cve-icon cve-icon
History

Wed, 10 Dec 2025 20:30:00 +0000

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

Wed, 10 Dec 2025 18:00:00 +0000

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

Wed, 10 Dec 2025 14:45:00 +0000

Type Values Removed Values Added
Description Same-origin policy bypass in the Request Handling component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6. Same-origin policy bypass in the Request Handling component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
References

Wed, 10 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Moderate

Tue, 09 Dec 2025 17:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-346
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

ssvc

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

Tue, 09 Dec 2025 13:45:00 +0000

Type Values Removed Values Added
Description Same-origin policy bypass in the Request Handling component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6.
Title Same-origin policy bypass in the Request Handling component
References
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2025-12-09T13:38:07.191Z

Updated: 2025-12-10T14:32:22.408Z

Reserved: 2025-12-09T13:38:06.607Z

Link: CVE-2025-14331

cve-icon Vulnrichment

Updated: 2025-12-09T16:58:42.348Z

cve-icon NVD

Status : Analyzed

Published: 2025-12-09T16:17:40.773

Modified: 2025-12-10T20:18:06.277

Link: CVE-2025-14331

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-12-09T13:38:07Z

Links: CVE-2025-14331 - Bugzilla