lm-sys — Vulnerabilities & Security Advisories 9

Lm-sys develops open-source web application frameworks primarily used for building dynamic websites and APIs. Historically, the project has been vulnerable to multiple remote code execution flaws, cross-site scripting (XSS) vulnerabilities, and privilege escalation issues, accounting for its nine recorded CVEs. Security researchers have identified recurring problems in input validation and access control mechanisms. While no major public security incidents have been documented, the consistent pattern of vulnerabilities suggests developers should implement strict input sanitization and proper authentication controls when using this framework in production environments.