{"action":"Upgrade igraph to 0.7.1-3 or later.","affected":[{"fixed":"0.7.1-3","introduced":"0"}],"component":"igraph","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["0.7.1-3"],"id":"tcs_01M5NDAJR6ZRCJEN2KD8FQSX4P","modified_at":"2026-10-23T18:03:22.037121485Z","published_at":"2018-12-22T00:29:00.273Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2018-20349","https://security-tracker.debian.org/tracker/CVE-2018-20349"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2018-20349","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2018-20349"}],"summary":"The igraph_i_strdiff function in igraph_trie.c in igraph through 0.7.1 has an NULL pointer dereference that allows attackers to cause a denial of service (application crash) via a crafted object."}