AviatorScript through 5.2.7 allows code execution via an expression that is encoded with Byte Code Engineering Library (BCEL).
{
"nvd_published_at": "2021-10-02T00:15:00Z",
"cwe_ids": [
"CWE-74"
],
"severity": "CRITICAL",
"github_reviewed": true,
"github_reviewed_at": "2021-10-04T16:58:38Z"
}