WebGL (Web Graphics Library) is a web-based technology that provides an API that enables JavaScript to create interactive 3D graphics within the web browser. It’s supported by Google Chrome, Mozilla FireFox 4 and the newest versions of Safari and Opera.
Context Information Security, a security company, published a report this month that points out security issues that affect the current WebGL implementations. US-CERT (the United States Computer Emergency Readiness Team) issued a warning and recommendation that WebGL be disabled in browsers where it’s turned on by default (Chrome and FireFox).
This post in the SANS Internet Storm Center blog gives instructions on how to disable WebGL in each browser: