When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.
{
"cpes": [
"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*"
],
"severity": "High"
}