Ugly Duckling, developed by the Detectify Security Research team, is an open-source application security tool designed for ethical hackers to streamline the process of sharing their latest vulnerability findings. Tailored for the Detectify Crowdsource community, this stand-alone vulnerability scanner allows users to detect "stateless" vulnerabilities with a single HTTP request, analyzing the response to identify potential security issues. Ethical hackers can create modules as JSON files to specify requests and analyses, with findings becoming active security tests within minutes. This tool, built in Go and available on GitHub, supports a collaborative approach to security by being accessible to anyone interested in bug bounty hunting, security research, or penetration testing. It enhances the speed at which vulnerability information flows from hackers to security defenders and aligns with Detectify's commitment to collaborative security practices.