The default exclude patterns (excludeParams) in Apache Struts 2.3.20 allow remote attackers to "compromise internal state of an application" via unspecified vectors. In Struts 2.3.20.1 a better set of exlude patterns was defined.
{
"nvd_published_at": "2015-07-16T14:59:00Z",
"github_reviewed_at": "2022-11-03T21:10:04Z",
"cwe_ids": [],
"github_reviewed": true,
"severity": "HIGH"
}