---
id: CVE-2025-14327
title: Spoofing issue in the Downloads Panel component
summary: >-
  Spoofing issue in the Downloads Panel component. This vulnerability was fixed
  in Firefox 146, Thunderbird 146, Firefox ESR 140.7, and Thunderbird 140.7.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-290
  - CWE-290
vendor: mozilla
product: firefox
affected:
  - firefox < 146.0
  - thunderbird < 146.0
patched:
  - firefox 146.0
  - thunderbird 146.0
published: '2025-12-09'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T17:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-14327'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1970743'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-92/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-95/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2026-03/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2026-05/'
    label: security@mozilla.org
tags:
  - nvd
epss: 0.00379
epssPercentile: 0.29388
ingestedAt: '2026-09-30T17:13:20.755Z'
---

## Overview

Spoofing issue in the Downloads Panel component. This vulnerability was fixed in Firefox 146, Thunderbird 146, Firefox ESR 140.7, and Thunderbird 140.7.

## Affected

- `firefox < 146.0`
- `thunderbird < 146.0`

## Remediation

Upgrade past the affected range:

- `firefox 146.0`
- `thunderbird 146.0`