The igraphistrdiff 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.
{ "versions": [ { "introduced": "0" }, { "last_affected": "0.7.1" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-20349.json"