In Jakarta Mail 2.2 it is possible to preform a SMTP Injection by utilizing the \r and \n UTF-8 characters to separate different messages.
{
"nvd_published_at": "2025-07-21T18:15:28Z",
"github_reviewed_at": "2025-08-06T20:44:37Z",
"cwe_ids": [
"CWE-147"
],
"severity": "MODERATE",
"github_reviewed": true
}