PrismJS — Vulnerabilities & Security Advisories 5

PrismJS is a lightweight syntax highlighting library used primarily for code display in web applications. Historically, it has faced vulnerabilities including cross-site scripting (XSS) due to improper input sanitization and remote code execution through maliciously crafted language definitions. The library's modular nature introduces potential risks when untrusted plugins are loaded. While no major security incidents have been widely documented, the five CVEs on record highlight ongoing concerns around insecure default configurations and insufficient validation of user-provided content. Developers should implement strict content security policies and validate all inputs to mitigate potential exploitation risks.