A missing permission check in Jenkins Chef Sinatra Plugin 1.20 and earlier allows attackers with Overall/Read permission to have Jenkins send an HTTP request to an attacker-controlled URL and have it parse an XML response.
{
"source": "CPE_RANGE",
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "1.20"
}
],
"cpe": "cpe:2.3:a:jenkins:chef_sinatra:*:*:*:*:*:jenkins:*:*"
}