Apache Solr versions 6.6.0 to 6.6.6, 7.0.0 to 7.7.3 and 8.0.0 to 8.6.2 prevents some features considered dangerous (which could be used for remote code execution) to be configured in a ConfigSet that's uploaded via API without authentication/authorization. The checks in place to prevent such features can be circumvented by using a combination of UPLOAD/CREATE actions.
{
"versions": [
{
"introduced": "6.6.0"
},
{
"last_affected": "6.6.6"
},
{
"introduced": "7.0.0"
},
{
"last_affected": "7.7.3"
},
{
"introduced": "8.0.0"
},
{
"last_affected": "8.6.2"
}
]
}