When creating temporary files, agent-to-controller access to create those files is only checked after they've been created in Jenkins LTS 2.303.2 and earlier.
{
"cpes": [
"cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*",
"cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*"
],
"severity": "Critical"
}