{"action":"Upgrade undertow to 2.2.4-1 or later.","affected":[{"fixed":"2.2.4-1","introduced":"0"}],"component":"undertow","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2.2.4-1"],"id":"tcs_01M5NEYRZZ9H1P6Q318H1JRBBT","modified_at":"2026-10-26T12:02:42.292211375Z","published_at":"2021-02-23T19:15:13.150Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-27782","https://security-tracker.debian.org/tracker/CVE-2020-27782"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-27782","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-27782"}],"summary":"A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a d"}