lxml — Vulnerabilities & Security Advisories 3

lxml serves as a Python library for processing XML and HTML, widely used for web scraping and data parsing. Historically, it has been susceptible to remote code execution vulnerabilities through crafted XML inputs, often via entity expansion attacks or insecure parsing methods. Cross-site scripting (XSS) has also been reported when processing malformed HTML. The library's C-based components have occasionally introduced memory corruption issues. While lxml has addressed these vulnerabilities through updates, its three CVEs highlight risks when processing untrusted input. Security-conscious implementations should validate and sanitize inputs before parsing to prevent potential exploits.