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CVE-2026-66322: Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

highCVSS 7.1CVE-2026-66322
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

Details

Source
NVD Recent CVEs (US · database · site)
Severity
high — CVSS 7.1
Published
2026-08-04
Last updated
2026-08-04
Exploitation
Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-66322

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-66322coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Origin validation error

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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