A Docker vulnerability is a weakness within an image, container, or host that could potentially be exploited, and is often added to the Common Vulnerabilities and Exposures (CVE) list. The top 5 Docker vulnerabilities include CVE-2019-5736, where a malicious actor can obtain root access on the host; CVE-2022-0847, known as the "dirty pipe" vulnerability, which enables a malicious actor to change the content of files they don't have permission to change and escalate their privileges; CVE-2021-21285, where pulling a malformed Docker image manifest crashes the Docker daemon running on the host system; CVE-2014-9356, a directory traversal vulnerability affecting Docker version 1.3.3; and CVE-2019-14271, an improper initialization vulnerability that allows a malicious actor to execute unauthorized code from within a container. To reduce Docker vulnerabilities, development teams can leverage automated tools for securing the container image, everything inside the container, and the runtime environment, as well as using container scanning and monitoring tools like Snyk to detect and remediate security issues.