Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an issue in the Jenkins user database authentication realm: create an account if signup is enabled; or create an account if the victim is an administrator, possibly deleting the existing default admin user in the process and allowing a wide variety of impacts.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "2.56"
},
{
"introduced": "0"
},
{
"last_affected": "2.46.1"
}
]
}