{"action":"Upgrade zookeeper to 3.9.6-1 or later.","affected":[{"fixed":"3.9.6-1","introduced":"0"}],"component":"zookeeper","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["3.9.6-1"],"id":"tcs_01M5NVYCFRRDV4MDCQJFWNVBSA","modified_at":"2026-10-01T03:03:51.299029381Z","published_at":"2026-09-16T10:16:53.433Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-84439","https://security-tracker.debian.org/tracker/CVE-2026-84439"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-84439#Debian:14/zookeeper","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-84439"}],"summary":"When audit logging is enabled (zookeeper.audit.enable=true), an unauthenticated attacker can inject arbitrary fields into Apache ZooKeeper's audit log by sending a digest authentication request with t"}