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Firefox 148 Introduces SetHTML for Enhanced XSS Protection
First seen 24 Feb 2026, 16:13 UTC
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Firefox 148 has implemented the new Sanitizer API, which allows web developers to sanitize untrusted HTML before inserting it into the DOM, thereby enhancing protection against cross-site scripting (XSS) vulnerabilities. This update marks Firefox as the first browser to adopt this standardized security feature, with expectations that other browsers will follow suit.
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2026-02-24
Firefox 148 released with new Sanitizer API for XSS protection
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