The function read_data() in security.c in curl before version 7.51.0 is vulnerable to memory double free.
read_data()
{ "versions": [ { "introduced": "0" }, { "fixed": "7.51.0" } ] }
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-8619.json"