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HIGH · 7.1

CVE-2026-66322

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

Vulnerability Description

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

CVSS Score

7.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE

Affected Products

VendorProductVersions
MicrosoftEdge Chromium< 151.0.4129.59

Related Weaknesses (CWE)

CWE-346

References

FAQ

What is CVE-2026-66322?

CVE-2026-66322 is a vulnerability with a CVSS score of 7.1 (HIGH). Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

How severe is CVE-2026-66322?

CVE-2026-66322 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-66322?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Edge Chromium.