{"id":"CVE-2020-5403","aliases":["EUVD-2022-1052","GHSA-hp5x-rqf7-43vf"],"status":"published","title":"DoS Via Malformed URL with Reactor Netty HTTP Server","description":"Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response.","severity":{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.01156,"percentile":0.67255,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20","CWE-755"],"published":"2020-03-03T18:25:14Z","modified":"2026-10-24T10:30:41Z","fixes":[{"ecosystem":"Maven","package":"io.projectreactor.netty:reactor-netty-http","fixed_in":["0.9.5"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"io.projectreactor.netty:reactor-netty-http","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.9.3"},{"last_affected":"0.9.4"},{"fixed":"0.9.5"}]}]},{"source":"osv","ecosystem":"Maven","package":"io.projectreactor.netty:reactor-netty-http","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.9.3"},{"fixed":"0.9.5"}]}]}],"products":[{"vendor":"broadcom","product":"reactor_netty"},{"vendor":"pivotal","product":"reactor netty"},{"vendor":"vmware","product":"reactor netty"}],"references":[{"url":"https://pivotal.io/security/cve-2020-5403","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5403","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hp5x-rqf7-43vf"}],"sources":{"cve":[{"id":"CVE-2020-5403","title":"DoS Via Malformed URL with Reactor Netty HTTP Server","description":"Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response.","status":"published","published":"2020-03-03T18:25:14.205Z","modified":"2024-09-17T00:00:46.313Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:35:47.56691Z"}],"euvd":[{"id":"EUVD-2022-1052","description":"Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response.","status":"published","published":"2020-03-03T18:25:14Z","modified":"2024-09-17T00:00:46Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:29:03.409164Z"}],"ghsa":[{"id":"GHSA-hp5x-rqf7-43vf","title":"Improper Handling of Exceptional Conditions and Improper Input Validation in Reactor Netty","description":"Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response.","status":"published","published":"2022-02-10T20:24:21Z","modified":"2023-01-29T05:05:26Z","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"}],"cwes":["CWE-20","CWE-755"],"updated_at":"2026-11-02T14:36:25.835323Z"}],"nvd":[{"id":"CVE-2020-5403","description":"Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response.","status":"published","published":"2020-03-03T19:15:15.21Z","modified":"2026-09-04T18:59:12.37Z","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":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20","CWE-755"],"updated_at":"2026-11-02T14:05:54.796125Z"}],"osv":[{"id":"CVE-2020-5403","description":"Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response.","status":"published","published":"2020-03-03T19:15:15.21Z","modified":"2026-10-24T10:30:41.318801188Z","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":"2026-11-02T15:44:16.936975Z"},{"id":"GHSA-hp5x-rqf7-43vf","title":"Improper Handling of Exceptional Conditions and Improper Input Validation in Reactor Netty","description":"Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response.","status":"published","published":"2022-02-10T20:24:21Z","modified":"2023-11-08T04:03:55.042467Z","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"}],"cwes":["CWE-20","CWE-755"],"updated_at":"2026-11-02T15:46:49.28217Z"}]}}