{"id":"CVE-2020-5403","aliases":["GHSA-hp5x-rqf7-43vf"],"url":"https://o3.security/vulnerability/CVE-2020-5403","summary":"Improper Handling of Exceptional Conditions and Improper Input Validation in Reactor Netty","details":"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.","published":"2020-03-03T19:15:15.210Z","modified":"2026-07-08T20:29:12.524942Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"io.projectreactor.netty:reactor-netty-http","fixedVersion":"0.9.5"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://pivotal.io/security/cve-2020-5403"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:29:12.524942Z"}}