PT-2026-67560 · Microsoft · Edge

CVE-2026-66313 · Published 2026-08-03 · Updated 2026-08-04

Mitre

CVSS v3.1

6.8

Medium

Base vector

AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

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

Fix

Origin Validation Error

Weakness Enumeration

CWE-346

Related Identifiers

CVE-2026-66313

Affected Products

Edge

References · 2

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66313 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-66313 · Security Note