HPE Helion Eucalyptus v4.3.0 and earlier does not correctly check IAM user's permissions for accessing versioned objects and ACLs. In some cases, authenticated users with S3 permissions could also access versioned data.
Atlassian Eucalyptus before 4.4.1, when in EDGE mode, allows remote authenticated users with certain privileges to cause a denial of service (E2 service outage) via unspecified vectors.