{"cve":"CVE-2020-5403","nvd":{"published":"2020-03-03T19:15:15.210","modified":"2026-09-04T18:59:12.370","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-755","CWE-20"],"references":["https://pivotal.io/security/cve-2020-5403","https://pivotal.io/security/cve-2020-5403"],"products":["broadcom:reactor_netty"],"source":"nvd","synced_at":"2026-10-19T21:02:53.949909883+00:00"},"epss":{"cve":"CVE-2020-5403","score":0.01156,"percentile":0.67051,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hp5x-rqf7-43vf","url":"https://osv.dev/vulnerability/GHSA-hp5x-rqf7-43vf","summary":"Improper Handling of Exceptional Conditions and Improper Input Validation in Reactor Netty","modified":"2023-11-08T04:03:55.042467Z","packages":[{"ecosystem":"Maven","name":"io.projectreactor.netty:reactor-netty-http","purl":"pkg:maven/io.projectreactor.netty/reactor-netty-http","ranges":[">=0.9.3 <0.9.5"],"fixed":["0.9.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}