The log4j library is a widely used logging framework for Java applications, but it has been found to be vulnerable to a critical severity Remote Code Execution (RCE) exploit, known as Log4Shell, which can cause arbitrary code execution on servers. The vulnerability was disclosed in December 2021 and has a high CVSS rating of 10, making it one of the most impactful exploits in the last decade. Cloudsmith is not impacted by this vulnerability, but developers and users of affected software should take it seriously due to its high impact and widespread use. To mitigate the issue, updated guidance and resources are available on the Cloudsmith website, including a detailed blog article that provides background, identification, and remediation advice for log4j/Log4Shell.