It was discovered that Undertow before 1.4.17, 1.3.31 and 2.0.0 processes http request headers with unusual whitespaces which can cause possible http request smuggling.
{
"cwe_ids": [
"CWE-444"
],
"github_reviewed": true,
"github_reviewed_at": "2022-11-08T12:39:25Z",
"severity": "HIGH",
"nvd_published_at": "2018-07-27T15:29:00Z"
}