The State of Open Source Security Report 2019` analyzed responses from over 500 open source maintainers and users to measure the pulse of the open source security landscape in different language ecosystems. The report found a unique presence of vulnerabilities, particularly `Path and Directory Traversal` and `Regular Expression Denial of Service (ReDoS)` in the JavaScript & Node.js ecosystems. A significant number of ReDoS vulnerabilities were discovered in the npm registry, with many attributed to research by Snyk collaborating with Facebook's Liang Gong. The report also highlighted the need for developers to be aware of these vulnerabilities and take steps to mitigate them, particularly in the context of serverless technologies. Furthermore, the report found that Node.js has a unique vulnerability profile compared to other ecosystems, with many strengths but also weaknesses that can be exploited if not used correctly. `The State of Open Source Security Report 2020` provides more findings on this topic.