The Chartkick gem through 3.3.2 for Ruby allows Cascading Style Sheets (CSS) Injection (without attribute).
{
"cwe_ids": [
"CWE-74"
],
"nvd_published_at": null,
"github_reviewed_at": "2020-08-11T17:50:02Z",
"github_reviewed": true,
"severity": "MODERATE"
}