The Chartkick gem through 3.3.2 for Ruby allows Cascading Style Sheets (CSS) Injection (without attribute).
{ "versions": [ { "introduced": "0" }, { "last_affected": "3.3.2" } ] }
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-16254.json"