{"id":"CVE-2019-0545","aliases":["GHSA-2xjx-v99w-gqf3"],"url":"https://o3.security/vulnerability/CVE-2019-0545","summary":"Exposure of Sensitive Information in System.Net.Http","details":"An information disclosure vulnerability exists in .NET Framework and .NET Core which allows bypassing Cross-origin Resource Sharing (CORS) configurations, aka \".NET Framework Information Disclosure Vulnerability.\" This affects Microsoft .NET Framework 2.0, Microsoft .NET Framework 3.0, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.5.2, Microsoft .NET Framework 4.6, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.7/4.7.1/4.7.2, .NET Core 2.1, Microsoft .NET Framework 4.7.1/4.7.2, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, .NET Core 2.2, Microsoft .NET Framework 4.7.2.","published":"2019-01-08T21:29:00.580Z","modified":"2026-07-08T05:53:21.287615656Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"NuGet","name":"Microsoft.NETCore.App","fixedVersion":"2.1.7"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App","fixedVersion":"2.2.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/106405"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:0040"},{"type":"FIX","url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0545"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:53:21.287615656Z"}}