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.
{ "nvd_published_at": "2013-12-12T18:55:10Z", "cwe_ids": [], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2020-06-16T21:18:51Z" }