A flaw was discovered in Elasticsearch 7.17.0’s upgrade assistant, in which upgrading from version 6.x to 7.x would disable the in-built protections on the security index, allowing authenticated users with “*” index permissions access to this index.
{ "cpes": [ "cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*" ], "severity": "Medium" }