Ruby OpenID is a robust library for verifying and serving OpenID identities.
An XML entity parsing error has been discovered in Ruby OpenID.
A remote attacker could send a specially crafted XML file, possibly resulting in a Denial of Service condition.
There is no known workaround at this time.
All Ruby OpenID users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-ruby/ruby-openid-2.2.2"