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

Wed, 05 Aug 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft microsoft Edge (chromium-based)
Vendors & Products Microsoft microsoft Edge (chromium-based)

Tue, 04 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 03 Aug 2026 23:30:00 +0000

Type Values Removed Values Added
Description Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
Title Microsoft Edge (Chromium-based) Spoofing Vulnerability
First Time appeared Microsoft
Microsoft edge Chromium
Weaknesses CWE-346
CPEs cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft edge Chromium
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C'}


cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-04T15:04:39.500Z

Reserved: 2026-07-24T18:06:51.295Z

Link: CVE-2026-66316

cve-icon Vulnrichment

Updated: 2026-08-04T14:19:49.553Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-05T10:21:24Z