{"cve":"CVE-2020-1757","nvd":{"published":"2020-04-21T17:15:12.957","modified":"2026-06-17T03:02:20.570","status":"Modified","description":"A flaw was found in all undertow-2.x.x SP1 versions prior to undertow-2.0.30.SP1, all undertow-1.x.x and undertow-2.x.x versions prior to undertow-2.1.0.Final, where the Servlet container causes servletPath to normalize incorrectly by truncating the path after semicolon which may lead to an application mapping resulting in the security bypass.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":8.1},"cwes":["CWE-20","CWE-200"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1757","https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1757"],"products":["redhat:jboss_data_grid","redhat:jboss_enterprise_application_platform","redhat:jboss_fuse","redhat:openshift_application_runtimes","redhat:single_sign-on","redhat:undertow"],"source":"nvd","synced_at":"2026-10-19T21:04:18.695612450+00:00"},"epss":{"cve":"CVE-2020-1757","score":0.01615,"percentile":0.76014,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-2w73-fqqj-c92p","url":"https://osv.dev/vulnerability/GHSA-2w73-fqqj-c92p","summary":"Improper Input Validation in Undertow","modified":"2023-11-08T04:02:43.432003Z","packages":[{"ecosystem":"Maven","name":"io.undertow:undertow-core","purl":"pkg:maven/io.undertow/undertow-core","ranges":["<2.1.0"],"fixed":["2.1.0"]}]}],"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."]}