The URLValidator class in Apache Struts 2 2.3.20 through 2.3.28.1 and 2.5.x before 2.5.13 allows remote attackers to cause a denial of service via a null value for a URL field.
{
"cwe_ids": [
"CWE-20"
],
"github_reviewed": true,
"nvd_published_at": "2016-07-04T22:59:00Z",
"github_reviewed_at": "2022-11-03T22:48:20Z",
"severity": "MODERATE"
}