{"action":"Upgrade mosquitto to 2.0.11-1.2 or later.","affected":[{"fixed":"2.0.11-1.2","introduced":"0"}],"component":"mosquitto","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["2.0.11-1.2"],"id":"tcs_01M5NFZSN8B0J16HDZFK4QWZDV","modified_at":"2026-10-23T18:03:27.873708537Z","published_at":"2021-12-01T20:15:07.933Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-41039","https://security-tracker.debian.org/tracker/CVE-2021-41039"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-41039#Debian:13/mosquitto","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-41039"}],"summary":"In versions 1.6 to 2.0.11 of Eclipse Mosquitto, an MQTT v5 client connecting with a large number of user-property properties could cause excessive CPU usage, leading to a loss of performance and possi"}