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CVE-2026-66313

MediumCVSS 6.8/10Last modified Oct 23, 2026

Description

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

Metrics

CVSS 3.1 6.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Weakness enumeration

Affected software

Vendor	Product	Versions
Microsoft	Microsoft Edge (Chromium-based)	>= 1.0.0.0, < 151.0.4129.59

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66313Vendor Advisory

Timeline

Published: Aug 4, 2026
Last modified: Oct 23, 2026
NVD status: Analyzed

Related CVEs from 2026

CVE-2026-663145.3Time-of-check time-of-use (toctou) race condition in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information CVE-2026-663157.5Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.CVE-2026-663165.4Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.CVE-2026-663175.4Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network.CVE-2026-663188.1Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.CVE-2026-66328.8A vulnerability was identified in Tenda F451 1.0.0.7_cn_svn7958. The affected element is the function fromSafeClientFilter of the file /gofo CVE-2026-663219.6Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute CVE-2026-663225.4Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.CVE-2026-663235.4Improper neutralization of parameter/argument delimiters in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code CVE-2026-663246.5External control of file name or path in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.CVE-2026-663256.1Server-side request forgery (ssrf) in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.CVE-2026-663268.8Missing authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

CVE-2026-66313: Medium severity, CVSS 6.8 | Vulnix