{"action":"Upgrade zeromq3 to 4.3.3-1 or later.","affected":[{"fixed":"4.3.3-1","introduced":"0"}],"component":"zeromq3","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.3.3-1"],"id":"tcs_01M5NFB0SZ0TSAC2YM2SZ3XKK6","modified_at":"2026-10-23T18:03:59.054763840Z","published_at":"2021-04-01T14:15:13.123Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-20234","https://security-tracker.debian.org/tracker/CVE-2021-20234"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-20234#Debian:14/zeromq3","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-20234"}],"summary":"An uncontrolled resource consumption (memory leak) flaw was found in the ZeroMQ client in versions before 4.3.3 in src/pipe.cpp. This issue causes a client that connects to multiple malicious or compr"}