Jenkins 2.274 and earlier, LTS 2.263.1 and earlier allows users with Agent/Configure permission to choose agent names that cause Jenkins to override the global config.xml file.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "2.263.1"
},
{
"introduced": "0"
},
{
"last_affected": "2.274"
}
]
}