---
id: CVE-2026-56646
title: >-
  Exposure of sensitive information to an unauthorized actor in Microsoft Edge
  (Chromium-based) allows an unauthorized attacker to perform spoofing over a
  network.
summary: >-
  Exposure of sensitive information to an unauthorized actor in Microsoft Edge
  (Chromium-based) allows an unauthorized attacker to perform spoofing over a
  network.
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'
cwe:
  - CWE-200
published: '2026-07-03'
updated: '2026-07-03'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-56646'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56646'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00922
epssPercentile: 0.58854
ingestedAt: '2026-07-04T16:56:19.088Z'
vendor: Microsoft
product: Microsoft Edge (Chromium-based)
affected:
  - edge_chromium-based >= 1.0.0.0 < 150.0.4078.48
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-07-06T15:17:11.669950Z'
---

## Overview

Exposure of sensitive information to an unauthorized actor in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.