{"action":"Upgrade undertow to 2.2.16-1 or later.","affected":[{"fixed":"2.2.16-1","introduced":"0"}],"component":"undertow","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2.2.16-1"],"id":"tcs_01M5NFX8KVHVE0A9J3ASQNFC3T","modified_at":"2026-10-23T18:03:50.126032650Z","published_at":"2022-08-26T16:15:09.623Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-3859","https://security-tracker.debian.org/tracker/CVE-2021-3859"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-3859","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-3859"}],"summary":"A flaw was found in Undertow that tripped the client-side invocation timeout with certain calls made over HTTP2. This flaw allows an attacker to carry out denial of service attacks."}