---
id: CVE-2026-57989
title: >-
  Origin validation error in Microsoft Edge (Chromium-based) allows an
  unauthorized attacker to disclose information over a network.
summary: >-
  Origin validation error in Microsoft Edge (Chromium-based) allows an
  unauthorized attacker to disclose information over a network.
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N'
cwe:
  - CWE-346
published: '2026-07-26'
updated: '2026-07-26'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-57989'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57989'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-07-26T19:13:36.810Z'
epss: 0.00429
epssPercentile: 0.34391
vendor: Microsoft
product: Microsoft Edge (Chromium-based)
affected:
  - edge_chromium-based >= 1.0.0.0 < 150.0.4078.99
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-07-27T14:49:27.891652Z'
---

## Overview

Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.

## Remediation

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