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MEDIUM · 6.8

CVE-2026-66313

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

Vulnerability Description

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

CVSS Score

6.8

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
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-2026-66313?

CVE-2026-66313 is a vulnerability with a CVSS score of 6.8 (MEDIUM). Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering locally.

How severe is CVE-2026-66313?

CVE-2026-66313 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-66313?

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