The ruby-openid gem before 2.2.2 for Ruby allows remote OpenID providers to cause a denial of service (CPU consumption) via (1) a large XRDS document or (2) an XML Entity Expansion (XEE) attack.
{
"severity": "MODERATE",
"github_reviewed_at": "2020-06-16T21:18:51Z",
"cwe_ids": [],
"nvd_published_at": "2013-12-12T18:55:10Z",
"github_reviewed": true
}