{"id":"CVE-2018-8409","aliases":["EUVD-2018-0622","GHSA-j378-6mmw-hqfr"],"status":"published","title":"Denial of service vulnerability exists when System.IO.Pipelines improperly handles requests","description":"A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka \"System.IO.Pipelines Denial of Service.\" This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.06558,"percentile":0.93853,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2018-09-13T00:00:00Z","modified":"2026-10-24T10:30:27Z","fixes":[{"ecosystem":"NuGet","package":"Microsoft.AspNetCore.All","fixed_in":["2.1.4"],"sources":["ghsa","osv"]},{"ecosystem":"NuGet","package":"Microsoft.AspNetCore.App","fixed_in":["2.1.4"],"sources":["ghsa","osv"]},{"ecosystem":"NuGet","package":"System.IO.Pipelines","fixed_in":["4.5.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"Microsoft.AspNetCore.All","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.1.0"},{"last_affected":"2.1.3"},{"fixed":"2.1.4"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"Microsoft.AspNetCore.App","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.1.0"},{"last_affected":"2.1.3"},{"fixed":"2.1.4"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"System.IO.Pipelines","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.5.0"},{"last_affected":"4.5.0"},{"fixed":"4.5.1"}]}],"versions":["4.5.0"]},{"source":"osv","ecosystem":"NuGet","package":"Microsoft.AspNetCore.All","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.1.0"},{"fixed":"2.1.4"}]}],"versions":["2.1.0","2.1.1","2.1.2","2.1.3"]},{"source":"osv","ecosystem":"NuGet","package":"Microsoft.AspNetCore.App","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.1.0"},{"fixed":"2.1.4"}]}],"versions":["2.1.0","2.1.1","2.1.2","2.1.3"]},{"source":"osv","ecosystem":"NuGet","package":"System.IO.Pipelines","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.5.0"},{"fixed":"4.5.1"}]}],"versions":["4.5.0"]}],"products":[{"vendor":"microsoft","product":".net core"},{"vendor":"microsoft","product":".net_core"},{"vendor":"microsoft","product":"asp.net core"},{"vendor":"microsoft","product":"asp.net_core"},{"vendor":"microsoft","product":"system.io.pipelines"}],"references":[{"url":"http://www.securityfocus.com/bid/105223","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory","web"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8409","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-8409","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-j378-6mmw-hqfr","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2018-8409","description":"A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka \"System.IO.Pipelines Denial of Service.\" This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.","status":"published","published":"2018-09-13T00:00:00Z","modified":"2024-08-05T06:54:36.419Z","updated_at":"2026-11-02T14:35:03.825765Z"}],"euvd":[{"id":"EUVD-2018-0622","description":"A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka \"System.IO.Pipelines Denial of Service.\" This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.","status":"published","published":"2018-09-13T00:00:00Z","modified":"2024-08-05T06:54:36Z","updated_at":"2026-11-03T02:40:03.169087Z"}],"ghsa":[{"id":"GHSA-j378-6mmw-hqfr","title":"Denial of service vulnerability exists when System.IO.Pipelines improperly handles requests","description":"A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka \"System.IO.Pipelines Denial of Service.\" This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.","status":"published","published":"2018-10-16T19:56:38Z","modified":"2023-01-29T05:06:34Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T14:36:26.667347Z"}],"nvd":[{"id":"CVE-2018-8409","description":"A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka \"System.IO.Pipelines Denial of Service.\" This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.","status":"published","published":"2018-09-13T00:29:02.037Z","modified":"2026-06-17T02:04:48.21Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:04:38.672108Z"}],"osv":[{"id":"CVE-2018-8409","description":"A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka \"System.IO.Pipelines Denial of Service.\" This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.","status":"published","published":"2018-09-13T00:29:02.037Z","modified":"2026-10-24T10:30:27.300258429Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:09.74357Z"},{"id":"GHSA-j378-6mmw-hqfr","title":"Denial of service vulnerability exists when System.IO.Pipelines improperly handles requests","description":"A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka \"System.IO.Pipelines Denial of Service.\" This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.","status":"published","published":"2018-10-16T19:56:38Z","modified":"2024-12-08T05:35:01.792231Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:46:49.977351Z"}]}}