CVE-2021-23337 identifies a command injection vulnerability in Lodash library versions prior to 4.17.21 that enables attackers with high privileges to execute arbitrary commands through the template function's variable option parameter. This vulnerability achieves a CVSS score of 7.2 (High severity) with an EPSS score of 74 percentile and 0.9% exploitation probability, indicating significant risk for JavaScript applications that utilize Lodash template functionality with user-controlled input or configuration parameters. The vulnerability details reveal that the template function lacks proper validation of the 'variable' option, allowing attackers to inject malicious commands that execute during template processing when they have sufficient privileges to control template parameters. This creates substantial exploit risk for Node.js applications, web applications using server-side templating, and JavaScript frameworks that process dynamic templates with Lodash, particularly affecting applications that allow user-defined template variables, configuration systems that process templates with elevated privileges, and enterprise applications using Lodash for data rendering and report generation without proper input sanitization. The technical root cause lies in Lodash's template function implementation, where insufficient validation of the 'variable' option enables command injection through crafted input parameters, classified as CWE-77 (Improper Neutralization of Special Elements used in a Command), creating a vector for known exploited vulnerabilities targeting JavaScript template processing systems. The vulnerability specifically affects the interaction between template compilation and variable option processing, where malicious input can escape normal template boundaries and execute arbitrary commands in the context of the application runtime environment. With over 21 affected packages including lodash-es and OpenShift components, this vulnerability demonstrates widespread exposure across JavaScript ecosystems and container platforms that rely on Lodash for template processing functionality. Mitigation strategies require upgrading to Lodash version 4.17.21 or later, which implements proper validation for template variable options to prevent command injection attacks, or implementing immediate workarounds including strict input validation for all template parameters and avoiding user-controlled variable options in template functions. Organizations should prioritize identifying all JavaScript applications using vulnerable Lodash versions with template functionality, audit template processing workflows for user input handling, implement comprehensive input validation and sanitization for template parameters, and maintain updated CVE database records to track similar command injection vulnerabilities that could compromise JavaScript application security through unsafe template processing and dynamic code execution attacks in templating systems.