When starting Apache Solr versions prior to 8.8.2, configured with the SaslZkACLProvider or VMParamsAllAndReadonlyDigestZkACLProvider and no existing security.json znode, if the optional read-only user is configured then Solr would not treat that node as a sensitive path and would allow it to be readable. Additionally, with any ZkACLProvider, if the security.json is already present, Solr will not automatically update the ACLs.
{
"nvd_published_at": "2021-04-13T07:15:00Z",
"severity": "HIGH",
"github_reviewed": true,
"cwe_ids": [
"CWE-279",
"CWE-522"
],
"github_reviewed_at": "2021-05-07T16:46:48Z"
}