{"action":"Upgrade mosquitto to 2.0.11-1 or later.","affected":[{"fixed":"2.0.11-1","introduced":"0"}],"component":"mosquitto","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["2.0.11-1"],"id":"tcs_01M5NFREMHZKSNEMZDYY1VP51Z","modified_at":"2026-10-23T18:03:49.632174707Z","published_at":"2021-07-22T14:15:08.050Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-34431","https://security-tracker.debian.org/tracker/CVE-2021-34431"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-34431#Debian:13/mosquitto","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-34431"}],"summary":"In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to pr"}