{"action":"Upgrade cflow to 1:1.6-6 or later.","affected":[{"fixed":"1:1.6-6","introduced":"0"}],"component":"cflow","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:1.6-6"],"id":"tcs_01M5NETEK5MMWMCRPEW3VC6HDE","modified_at":"2026-09-11T11:02:42.783855735Z","published_at":"2021-05-18T15:15:07.877Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-23856","https://security-tracker.debian.org/tracker/CVE-2020-23856"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-23856#Debian:13/cflow","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-23856"}],"summary":"Use-after-Free vulnerability in cflow 1.6 in the void call(char *name, int line) function at src/parser.c, which could cause a denial of service via the pointer variable caller->callee."}