{"action":"Upgrade mosquitto to 1.6.6-1 or later.","affected":[{"fixed":"1.6.6-1","introduced":"0"}],"component":"mosquitto","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1.6.6-1"],"id":"tcs_01M5NDQDC600QSDRBCDKB51EH7","modified_at":"2026-09-21T07:01:29.814836769Z","published_at":"2019-09-19T14:15:10.573Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-11779","https://security-tracker.debian.org/tracker/CVE-2019-11779"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-11779#Debian:13/mosquitto","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-11779"}],"summary":"In Eclipse Mosquitto 1.5.0 to 1.6.5 inclusive, if a malicious MQTT client sends a SUBSCRIBE packet containing a topic that consists of approximately 65400 or more '/' characters, i.e. the topic hierar"}