{"id":"CVE-2017-11879","aliases":["EUVD-2022-2253","GHSA-3wcj-rg8q-9cqv"],"status":"published","title":"Open redirect in ASP.NET Core","description":"ASP.NET Core 2.0 allows an attacker to steal log-in session information such as cookies or authentication tokens via a specially crafted URL aka \"ASP.NET Core Elevation Of Privilege Vulnerability\".","severity":{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.09398,"percentile":0.95439,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-601"],"published":"2017-11-15T03:00:00Z","modified":"2026-10-24T10:30:21Z","fixes":[{"ecosystem":"NuGet","package":"Microsoft.AspNetCore.All","fixed_in":["2.0.3"],"sources":["ghsa","osv"]},{"ecosystem":"NuGet","package":"Microsoft.AspNetCore.Mvc.Core","fixed_in":["2.0.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"Microsoft.AspNetCore.All","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.0.3"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"Microsoft.AspNetCore.Mvc.Core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"last_affected":"2.0.0"},{"fixed":"2.0.1"}]}],"versions":["2.0.0"]},{"source":"osv","ecosystem":"NuGet","package":"Microsoft.AspNetCore.All","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.0.3"}]}],"versions":["2.0.0"]},{"source":"osv","ecosystem":"NuGet","package":"Microsoft.AspNetCore.Mvc.Core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.0.1"}]}],"versions":["2.0.0"]}],"products":[{"vendor":"microsoft","product":"asp.net core"},{"vendor":"microsoft","product":"asp.net_core"},{"vendor":"microsoft corporation","product":"asp.net core"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11879","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Patch","Vendor Advisory","fix","web"]},{"url":"http://www.securityfocus.com/bid/101713","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"http://www.securitytracker.com/id/1039793","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Issue Tracking","Third Party Advisory","VDB Entry","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11879","tags":["advisory"]},{"url":"https://github.com/aspnet/Announcements/issues/277","tags":["web"]},{"url":"https://github.com/github/advisory-database/issues/302","tags":["web"]},{"url":"https://github.com/advisories/GHSA-3wcj-rg8q-9cqv"}],"sources":{"cve":[{"id":"CVE-2017-11879","description":"ASP.NET Core 2.0 allows an attacker to steal log-in session information such as cookies or authentication tokens via a specially crafted URL aka \"ASP.NET Core Elevation Of Privilege Vulnerability\".","status":"published","published":"2017-11-15T03:00:00Z","modified":"2024-09-16T22:14:43.416Z","updated_at":"2026-11-02T14:33:19.848632Z"}],"euvd":[{"id":"EUVD-2022-2253","description":"ASP.NET Core 2.0 allows an attacker to steal log-in session information such as cookies or authentication tokens via a specially crafted URL aka \"ASP.NET Core Elevation Of Privilege Vulnerability\".","status":"published","published":"2017-11-15T03:00:00Z","modified":"2024-09-16T22:14:43Z","updated_at":"2026-11-03T00:55:04.822795Z"}],"ghsa":[{"id":"GHSA-3wcj-rg8q-9cqv","title":"Open redirect in ASP.NET Core","description":"ASP.NET Core 2.0 allows an attacker to steal log-in session information such as cookies or authentication tokens via a specially crafted URL aka \"ASP.NET Core Elevation Of Privilege Vulnerability\".","status":"published","published":"2022-05-14T03:47:22Z","modified":"2023-01-27T05:02:22Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:36:17.742171Z"}],"nvd":[{"id":"CVE-2017-11879","description":"ASP.NET Core 2.0 allows an attacker to steal log-in session information such as cookies or authentication tokens via a specially crafted URL aka \"ASP.NET Core Elevation Of Privilege Vulnerability\".","status":"published","published":"2017-11-15T03:29:01.827Z","modified":"2026-06-17T01:02:31.273Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:04:08.635428Z"}],"osv":[{"id":"CVE-2017-11879","description":"ASP.NET Core 2.0 allows an attacker to steal log-in session information such as cookies or authentication tokens via a specially crafted URL aka \"ASP.NET Core Elevation Of Privilege Vulnerability\".","status":"published","published":"2017-11-15T03:29:01.827Z","modified":"2026-10-24T10:30:21.094309607Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:04.159616Z"},{"id":"GHSA-3wcj-rg8q-9cqv","title":"Open redirect in ASP.NET 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