{"action":"Upgrade zsh to 5.5-1 or later.","affected":[{"fixed":"5.5-1","introduced":"0"}],"component":"zsh","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["5.5-1"],"id":"tcs_01M5NDHF33XQAYAVKSC51B7T5W","modified_at":"2026-10-23T18:03:08.562061918Z","published_at":"2018-02-27T22:29:00.653Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2018-7549","https://security-tracker.debian.org/tracker/CVE-2018-7549"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2018-7549","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2018-7549"}],"summary":"In params.c in zsh through 5.4.2, there is a crash during a copy of an empty hash table, as demonstrated by typeset -p."}