{"action":"Upgrade nagios4 to 4.3.4-3 or later.","affected":[{"fixed":"4.3.4-3","introduced":"0"}],"component":"nagios4","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.3.4-3"],"id":"tcs_01M5ND18T3JSX86E3RBE8EV4RK","modified_at":"2026-10-23T18:03:54.573190476Z","published_at":"2018-07-12T18:29:00.420Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2018-13441","https://security-tracker.debian.org/tracker/CVE-2018-13441"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2018-13441#Debian:14/nagios4","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2018-13441"}],"summary":"qh_help in Nagios Core version 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attacker to cause a local denial-of-service condition by sending a crafted payload t"}