{"id":"CVE-2021-3629","aliases":["GHSA-rf6q-vx79-mjxr"],"url":"https://o3.security/vulnerability/CVE-2021-3629","summary":"Undertow Uncontrolled Resource Consumption","details":"A flaw was found in Undertow. A potential security issue in flow control handling by the browser over http/2 may potentially cause overhead or a denial of service in the server. The highest threat from this vulnerability is availability. This flaw affects Undertow versions prior to 2.0.40.Final and prior to 2.2.11.Final.","published":"2022-05-24T19:15:09.093Z","modified":"2026-07-08T05:57:12.494248517Z","cvss":{"score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"io.undertow:undertow-core","fixedVersion":"2.0.40.Final"},{"ecosystem":"Maven","name":"io.undertow:undertow-core","fixedVersion":"2.2.11.Final"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20220729-0008/"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1977362"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:57:12.494248517Z"}}