{"affected":[{"product":"Microsoft Edge (Chromium-based)","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"151.0.4129.59","status":"affected","version":"1.0.0.0","versionType":"custom"}]}],"cveId":"CVE-2026-66317","cwes":["CWE-346"],"description":"Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network.","epss":{"date":"2026-11-10","percentile":0.1151,"score":0.00212},"exploits":[],"kev":null,"metrics":[{"score":5.4,"severity":"medium","source":"CNA: microsoft","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","version":"3.1"}],"modifiedAt":1794350463255,"publishedAt":1785797874002,"references":[{"source":"CNA: microsoft","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66317"}],"remediation":[{"kind":"fix","source":"CNA: microsoft","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66317"}],"revision":"4ab54eca6ed33140c9efa7e6190612aa03ea98c734a0b6111bfbaa1bd6483747","sources":[{"modifiedAt":1794350463255,"name":"CNA: microsoft","retrievedAt":1794353790804,"url":"https://www.cve.org/CVERecord?id=CVE-2026-66317"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794353821182,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-66317"}],"ssvc":{"assessedAt":1785853006570,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Microsoft Edge (Chromium-based) Tampering Vulnerability","updatedAt":1794353821182}