{"id":"CVE-2026-66322","aliases":[],"cve":{"records":[{"id":"CVE-2026-66322","source":"microsoft","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-07-24T18:06:51.296Z","published":"2026-08-03T22:57:54.552Z","modified":"2026-10-28T20:07:07.747Z"}],"publishers":[{"name":"microsoft","role":"CNA","organizationId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","modified":"2026-10-28T20:07:07.747Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-08-04T14:00:42.306Z"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66322","tags":["vendor-advisory","patch"],"source":"microsoft"}],"weaknesses":[{"id":"CWE-346","description":"CWE-346: Origin Validation Error","source":"microsoft"}],"applicability":[{"source":"microsoft","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*","versionStartIncluding":"1.0.0.0","versionEndExcluding":"151.0.4129.59"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-08-04T14:00:34.497649Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Microsoft Edge (Chromium-based) Spoofing Vulnerability","titleSource":"microsoft","descriptionSource":"microsoft","description":"Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.","score":7.1,"severity":"high","published":"2026-08-03T22:57:54.552Z","modified":"2026-10-28T20:07:07.747Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Microsoft","name":"Microsoft Edge (Chromium-based)","platforms":[],"versions":[{"version":"1.0.0.0","status":"affected","lessThan":"151.0.4129.59","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-66322"}],"remediation":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66322"],"sources":[{"name":"CVE","id":"CVE-2026-66322","modified":"2026-10-28T20:07:07.747Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-66322"}],"assessments":[{"source":"microsoft","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C","score":7.1}],"sourceAffected":[],"observedAt":"2026-10-29T14:42:30.162Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T00:50:33.640Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"Microsoft Edge (Chromium-based) versions before 151.0.4129.59 have an origin validation error, allowing an attacker to perform spoofing over a network. The vulnerability is due to a weakness in origin validation. An attacker needs network access to exploit this vulnerability.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:32:00.442Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-66322"}]}}