Jsish — Vulnerabilities & Security Advisories 6

Jsish is a lightweight scripting language implementation of JavaScript designed for embedded systems and automation tasks. Historically, it has been associated with several remote code execution vulnerabilities due to unsafe evaluation functions and input validation flaws. Cross-site scripting (XSS) vulnerabilities have also been prevalent, often stemming from improper sanitization of user-supplied data. While no major public security incidents have been documented, the six CVEs recorded reveal consistent patterns of privilege escalation risks through insecure default configurations and insufficient access controls. The project's minimal attack surface is offset by recurring issues in input handling and sandboxing mechanisms, requiring careful implementation in security-sensitive environments.