{"id":"CVE-2021-3629","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.","aliases":["GHSA-rf6q-vx79-mjxr"],"modified":"2026-04-10T04:35:29.019824Z","published":"2022-05-24T19:15:09.093Z","references":[{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20220729-0008/"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1977362"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/undertow-io/undertow","events":[{"introduced":"0"},{"fixed":"225d62735b189e460a56460207b8c6073fcc3737"},{"introduced":"8ddcc2608f58ed3377474f4e537728c5518a7862"},{"fixed":"df0f10c6e62061b3dd39c27ce36182a7e6360005"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"2.0.40"},{"introduced":"2.2.0"},{"fixed":"2.2.11"}]}},{"type":"GIT","repo":"https://github.com/wildfly/wildfly-core","events":[{"introduced":"0"},{"fixed":"38f40e77f5284243a5f469faf7e7165b857aa68e"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"17.0"}]}}],"versions":["1.0.0.Alpha1","1.0.0.Alpha10","1.0.0.Alpha11","1.0.0.Alpha12","1.0.0.Alpha13","1.0.0.Alpha14","1.0.0.Alpha15","1.0.0.Alpha16","1.0.0.Alpha17","1.0.0.Alpha18","1.0.0.Alpha19","1.0.0.Alpha2","1.0.0.Alpha20","1.0.0.Alpha21","1.0.0.Alpha22","1.0.0.Alpha3","1.0.0.Alpha4","1.0.0.Alpha5","1.0.0.Alpha6","1.0.0.Alpha7","1.0.0.Alpha8","1.0.0.Alpha9","1.0.0.Beta1","1.0.0.Beta10","1.0.0.Beta11","1.0.0.Beta12","1.0.0.Beta13","1.0.0.Beta14","1.0.0.Beta15","1.0.0.Beta16","1.0.0.Beta17","1.0.0.Beta18","1.0.0.Beta19","1.0.0.Beta2","1.0.0.Beta20","1.0.0.Beta21","1.0.0.Beta22","1.0.0.Beta23","1.0.0.Beta24","1.0.0.Beta25","1.0.0.Beta26","1.0.0.Beta27","1.0.0.Beta28","1.0.0.Beta29","1.0.0.Beta3","1.0.0.Beta30","1.0.0.Beta31","1.0.0.Beta32","1.0.0.Beta33","1.0.0.Beta4","1.0.0.Beta5","1.0.0.Beta6","1.0.0.Beta7","1.0.0.Beta8","1.0.0.Beta9","1.0.0.CR1","1.0.0.CR2","1.0.0.CR3","1.0.0.CR4","1.0.0.Final","1.0.1.Final","1.0.2.Final","1.0.3.Final","1.1.0.Beta1","1.1.0.Beta2","1.1.0.Beta3","1.1.0.Beta4","1.1.0.Beta5","1.1.0.Beta6","1.1.0.Beta7","1.1.0.Beta8","1.2.0.Beta1","1.2.0.Beta10","1.2.0.Beta2","1.2.0.Beta3","1.2.0.Beta4","1.2.0.Beta5","1.2.0.Beta6","1.2.0.Beta7","1.2.0.Beta8","1.2.0.Beta9","1.2.0.CR1","1.2.0.Final","1.2.1.Final","1.2.2.Final","1.2.3.Final","1.2.4.Final","1.3.0.Beta1","1.3.0.Beta10","1.3.0.Beta11","1.3.0.Beta12","1.3.0.Beta13","1.3.0.Beta2","1.3.0.Beta3","1.3.0.Beta4","1.3.0.Beta5","1.3.0.Beta6","1.3.0.Beta7","1.3.0.Beta8","1.3.0.Beta9","1.3.0.CR1","1.3.0.CR2","1.3.0.CR3","1.3.0.Final","1.3.1.Final","1.3.2.Final","1.3.3.Final","10.0.0.Beta1","10.0.0.Beta2","10.0.0.Beta3","10.0.0.Beta4","10.0.0.Beta5","10.0.0.Beta6","10.0.0.Beta7","10.0.0.Beta8","10.0.0.Beta9","10.0.0.CR1","10.0.0.Final","11.0.0.Beta1","11.0.0.Beta10","11.0.0.Beta2","11.0.0.Beta3","11.0.0.Beta4","11.0.0.Beta5","11.0.0.Beta6","11.0.0.Beta7","11.0.0.Beta8","11.0.0.Beta9","11.0.0.Final","12.0.0.Beta1","12.0.0.Beta2","12.0.0.Beta3","12.0.0.Beta4","12.0.0.Final","12.0.1.Final","13.0.0.Beta1","13.0.0.Beta2","13.0.0.Beta3","13.0.0.Beta4","13.0.0.Beta5","13.0.0.Beta6","13.0.0.Final","13.0.1.Final","14.0.0.Beta1","14.0.0.Beta2","14.0.0.Beta3","14.0.0.Beta4","14.0.0.Beta5","14.0.0.Final","15.0.0.Beta1","15.0.0.Final","16.0.0.Beta1","16.0.0.Beta2","16.0.0.Beta3","16.0.0.Beta4","16.0.0.Beta5","16.0.0.Final","17.0.0.Beta1","17.0.0.Beta2","17.0.0.Beta3","17.0.0.Beta4","17.0.0.Beta5","17.0.0.Beta6","17.0.0.Beta7","2.0.0.Alpha1","2.0.0.Alpha10","2.0.0.Alpha11","2.0.0.Alpha12","2.0.0.Alpha13","2.0.0.Alpha2","2.0.0.Alpha3","2.0.0.Alpha4","2.0.0.Alpha5","2.0.0.Alpha6","2.0.0.Alpha8","2.0.0.Alpha9","2.0.0.Beta1","2.0.0.Beta2","2.0.0.Beta3","2.0.0.Beta4","2.0.0.Beta5","2.0.0.Beta6","2.0.0.Beta7","2.0.0.CR1","2.0.0.CR2","2.0.0.CR3","2.0.0.CR4","2.0.0.CR5","2.0.0.CR6","2.0.0.CR7","2.0.0.CR8","2.0.0.CR9","2.0.0.Final","2.0.1.Final","2.0.10.Final","2.0.11.Final","2.0.12.Final","2.0.13.Final","2.0.14.Final","2.0.15.Final","2.0.16.Final","2.0.17.Final","2.0.2.Final","2.0.20.Final","2.0.21.Final","2.0.22.Final","2.0.23.Final","2.0.24.Final","2.0.25.Final","2.0.26.Final","2.0.27.Final","2.0.28.Final","2.0.29.Final","2.0.3.Final","2.0.30.Final","2.0.31.Final","2.0.32.Final","2.0.33.Final","2.0.34.Final","2.0.35.Final","2.0.36.Final","2.0.37.Final","2.0.38.Final","2.0.39.Final","2.0.4.Final","2.0.5.CR1","2.0.5.Final","2.0.6.Final","2.0.7.Final","2.0.8.Final","2.0.9.Final","2.1.0.CR1","2.1.0.CR2","2.1.0.Final","2.2.0.Final","2.2.1.Final","2.2.10.Final","2.2.2.Final","2.2.3.Final","2.2.4.Final","2.2.5.Final","2.2.6.Final","2.2.7.Final","2.2.8.Final","2.2.9.Final","3.0.0.Alpha1","3.0.0.Alpha10","3.0.0.Alpha11","3.0.0.Alpha12","3.0.0.Alpha13","3.0.0.Alpha14","3.0.0.Alpha15","3.0.0.Alpha16","3.0.0.Alpha17","3.0.0.Alpha18","3.0.0.Alpha19","3.0.0.Alpha2","3.0.0.Alpha20","3.0.0.Alpha21","3.0.0.Alpha22","3.0.0.Alpha23","3.0.0.Alpha24","3.0.0.Alpha25","3.0.0.Alpha3","3.0.0.Alpha4","3.0.0.Alpha5","3.0.0.Alpha6","3.0.0.Alpha7","3.0.0.Alpha8","3.0.0.Alpha9","3.0.0.Beta1","3.0.0.Beta11","3.0.0.Beta12","3.0.0.Beta13","3.0.0.Beta14","3.0.0.Beta15","3.0.0.Beta16","3.0.0.Beta16-pr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