Dokploy is a free, self-hostable Platform as a Service (PaaS). Prior to 0.29.8, the getRegistryCommands() function in packages/server/src/utils/cluster/upload.ts interpolates registry.password and registry.registryUrl directly into a shell command without escaping. An authenticated user with project access can configure malicious registry credentials and trigger a swarm deployment to execute arbitrary OS commands on the Dokploy server, read or modify host files, and access other containers through Docker. This issue is fixed in version 0.29.8.