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VULNERABILITIES

CVE-2025-14331 Details

Description

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

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CNA: CISA-ADPCVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=2000218 [email protected]Issue TrackingPermissions Required
https://www.mozilla.org/security/advisories/mfsa2025-92/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-93/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-94/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-95/ [email protected]Vendor Advisory

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-346Origin Validation Error[email protected]
CWE-346Origin Validation ErrorCISA-ADP

Affected Products

ProductVersions
mozilla firefox
< 115.31.0
< 146.0
>= 116.0, < 140.6.0

CPE

  • cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*

Remediation

  • No remediation found in references.
mozilla thunderbird
< 140.6.0
< 146.0

CPE

  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*

Remediation

  • No remediation found in references.

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2025-14331
NVD Published Date:
Dec 9, 2025
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2025-14331 Details - Not Deferred