The vulnerability centers on missing permission checks in credential enumeration methods. Jenkins advisories explicitly name 'fillCredentialsIdItems' methods across multiple descriptor classes (DockerServerCredentials, DockerRegistryEndpoint, etc.) as the vulnerable endpoints. These methods implement dropdown population for credential selection in UI forms but lacked authorization checks. In runtime profiling, these would appear when unprivileged users access configuration endpoints to enumerate credentials. The high confidence comes from direct advisory references to these methods, while medium confidence for DockerTemplateBase comes from pattern matching with Jenkins plugin architecture.