Simon Willison’s Weblog

XSS. Sanitising HTML is an extremely hard problem. The sanitize helper that ships with Rails is completely broken; Jacques Distler provides a better alternative.

Posted 12th March 2007 at 12:34 am

Recent articles

Recreating the Apollo AI adoption rate chart with GPT-5, Python and Pyodide - 9th September 2025
GPT-5 Thinking in ChatGPT (aka Research Goblin) is shockingly good at search - 6th September 2025
V&A East Storehouse and Operation Mincemeat in London - 27th August 2025

jacques-distler 1 rails 72 security 541 xss 60

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