---
id: CVE-2025-12445
title: >-
  Policy bypass in Extensions in Google Chrome prior to 142.0.7444.59 allowed an
  attacker who convinced a user to install a malicious extension to leak
  cross-origin data via a crafted Chrome Extension
summary: >-
  Policy bypass in Extensions in Google Chrome prior to 142.0.7444.59 allowed an
  attacker who convinced a user to install a malicious extension to leak
  cross-origin data via a crafted Chrome Extension. (Chromium security severity:
  Low)
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-288
vendor: google
product: chrome
affected:
  - chrome < 142.0.7444.59
patched:
  - chrome 142.0.7444.59
published: '2025-11-10'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T17:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-12445'
references:
  - url: >-
      https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop_28.html
    label: chrome-cve-admin@google.com
  - url: 'https://issues.chromium.org/issues/428397712'
    label: chrome-cve-admin@google.com
tags:
  - nvd
epss: 0.00141
epssPercentile: 0.02846
ingestedAt: '2026-09-30T17:13:20.729Z'
---

## Overview

Policy bypass in Extensions in Google Chrome prior to 142.0.7444.59 allowed an attacker who convinced a user to install a malicious extension to leak cross-origin data via a crafted Chrome Extension. (Chromium security severity: Low)

## Affected

- `chrome < 142.0.7444.59`

## Remediation

Upgrade past the affected range:

- `chrome 142.0.7444.59`