The grape rubygem suffers from a cross-site scripting (XSS) vulnerability via "format" parameter.
{ "nvd_published_at": "2018-07-05T16:29:00Z", "github_reviewed_at": "2020-06-16T21:33:43Z", "severity": "MODERATE", "github_reviewed": true, "cwe_ids": [ "CWE-79" ] }