{"action":"Upgrade irssi to 0.8.13-2 or later.","affected":[{"fixed":"0.8.13-2","introduced":"0"}],"component":"irssi","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["0.8.13-2"],"id":"tcs_01M5N9AAE7K3PH8QQAV554YMS2","modified_at":"2026-10-23T17:47:51.010504665Z","published_at":"2009-06-08T01:00:00.767Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2009-1959","https://security-tracker.debian.org/tracker/CVE-2009-1959"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2009-1959#Debian:14/irssi","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2009-1959"}],"summary":"Off-by-one error in the event_wallops function in fe-common/irc/fe-events.c in irssi 0.8.13 allows remote IRC servers to cause a denial of service (crash) via an empty command, which triggers a one-by"}