When creating temporary files, agent-to-controller access to create those files is only checked after they've been created in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.
{ "cpes": [ "cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*", "cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*" ], "severity": "Critical" }