Jenkins Self-Organizing Swarm Plug-in Modules Plugin 3.20 and earlier does not check permissions on API endpoints that allow adding and removing agent labels.

A cross-site request forgery vulnerability in Jenkins Self-Organizing Swarm Plug-in Modules Plugin 3.20 and earlier allows attackers to add or remove agent labels.

Jenkins Self-Organizing Swarm Plug-in Modules Plugin clients that use UDP broadcasts to discover Jenkins masters do not prevent XML External Entity processing when processing the responses, allowing unauthorized attackers on the same network to read arbitrary files from Swarm clients.