{"id":"CVE-2026-70188","aliases":[],"title":"ASP.NET Core Security Feature Bypass Vulnerability","titleSource":"microsoft","descriptionSource":"microsoft","products":[{"vendor":"Microsoft","name":"ASP.NET Core 10.0","platforms":[],"versions":[{"version":"10.0","status":"affected","lessThan":"10.0.13","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70188"},{"vendor":"Microsoft","name":"ASP.NET Core 11.0","platforms":[],"versions":[{"version":"11.0","status":"affected","lessThan":"11.0.0-rc.2","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70188"},{"vendor":"Microsoft","name":"ASP.NET Core 8.0","platforms":[],"versions":[{"version":"8.0","status":"affected","lessThan":"8.0.32","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70188"},{"vendor":"Microsoft","name":"ASP.NET Core 9.0","platforms":[],"versions":[{"version":"9.0","status":"affected","lessThan":"9.0.21","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70188"},{"vendor":"Microsoft","name":"Microsoft Visual Studio 2022 version 17.14","platforms":[],"versions":[{"version":"17.14.0","status":"affected","lessThan":"17.14.42","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70188"},{"vendor":"Microsoft","name":"Microsoft Visual Studio 2026 version 18.10","platforms":[],"versions":[{"version":"18.10.0","status":"affected","lessThan":"18.10.4","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70188"}],"remediation":[],"description":"Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network.","severity":"critical","score":9.1,"published":"2026-10-13T19:00:26.806Z","modified":"2026-10-27T21:29:49.854Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70188"],"sources":[{"name":"CVE","id":"CVE-2026-70188","modified":"2026-10-27T21:29:49.854Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-70188"}],"assessments":[{"source":"microsoft","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","score":9.1}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T16:50:32.247Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}