React Security: Mastering dangerouslySetInnerHTML Without Inviting XSS Attacks

Every React developer eventually needs to render dynamic HTML from external sources like CMSs or rich text editors, yet React's safety-first design makes this task surprisingly complex. This guide covers why dangerouslySetInnerHTML exists, how to implement it safely with DOMPurify sanitization, and when to use alternative approaches. Mastering this pattern is critical for building production applications that handle external content without creating XSS vulnerabilities.