CVE-2026-66313

Microsoft · Published July 31, 2026

6.8

CVSS v3.1

MEDIUM

Patch availableGet patch

Description

Microsoft Edge (Chromium-based) Tampering Vulnerability. Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering locally.

Affected Products

Microsoft Edge (Chromium-based)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C