Dokploy, a self-hostable Platform as a Service (PaaS), contains a critical vulnerability in versions prior to 0.26.6 where the installation script uses hardcoded database credentials. The vulnerability is located in the install.sh script at line 154, causing nearly all Dokploy installations to use identical database credentials. This exposes all affected installations to potential compromise since attackers can easily access databases using the known hardcoded password. The issue has been patched in version 0.26.6.