The base64 encode function in curl before version 7.51.0 is prone to a buffer being under allocated in 32bit systems if it receives at least 1Gb as input via CURLOPT_USERNAME.
CURLOPT_USERNAME
{ "versions": [ { "introduced": "0" }, { "fixed": "7.51.0" } ] }
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-8617.json"