Verisons of morgan before 1.9.1 are vulnerable to code injection when user input is allowed into the filter or combined with a prototype pollution attack.
Update to version 1.9.1 or later.
{
"github_reviewed": true,
"cwe_ids": [
"CWE-94"
],
"nvd_published_at": null,
"github_reviewed_at": "2020-06-16T21:38:10Z",
"severity": "CRITICAL"
}