---
id: CVE-2025-8364
title: >-
  A crafted URL using a blob: URI could have hidden the true origin of the page,
  resulting in a potential spoofing attack.

  *Note: This issue only affected Android operating systems
summary: >-
  A crafted URL using a blob: URI could have hidden the true origin of the page,
  resulting in a potential spoofing attack.

  *Note: This issue only affected Android operating systems. Other operating
  systems are unaffected.*. This vulnerabil…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'
cwe:
  - CWE-451
vendor: mozilla
product: firefox
affected:
  - firefox < 141.0
patched:
  - firefox 141.0
published: '2025-08-19'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T18:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-8364'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1909609'
    label: security@mozilla.org
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1969937'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-56/'
    label: security@mozilla.org
tags:
  - nvd
epss: 0.00223
epssPercentile: 0.11681
ingestedAt: '2026-09-30T18:17:24.455Z'
---

## Overview

A crafted URL using a blob: URI could have hidden the true origin of the page, resulting in a potential spoofing attack.
*Note: This issue only affected Android operating systems. Other operating systems are unaffected.*. This vulnerability was fixed in Firefox 141.

## Affected

- `firefox < 141.0`

## Remediation

Upgrade past the affected range:

- `firefox 141.0`