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Web DevelopmentFebruary 24, 2026Mozilla Hacks

Goodbye innerHTML, Hello setHTML: Stronger XSS Protection in Firefox 148

Article summary

Cross-site scripting (XSS) remains one of the most prevalent vulnerabilities on the web. The new standardized Sanitizer API provides a straightforward way for web developers to sanitize untrusted HTML before inserting it into the DOM. Firefox 148 is the first browser to ship this standardized security enhancing API, ad

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