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Tag: HTML5

Web Application Security

HTML5: Cross Origin Resource Sharing (CORS) Vulnerabilities

by HollyGracefulDecember 26, 2015February 3, 2020
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Web Application Security

HTML5: Cross Domain Messaging (PostMessage) Vulnerabilities

by HollyGracefulNovember 16, 2015February 2, 2020

HTML5 PostMessages (also known as: Web Messaging, or Cross Domain Messaging) is a method of passing arbitrary data between domains. However if not implemented correctly it can lead to sensitive information disclosure or cross-site scripting vulnerabilities as it leaves origin validation up to the developer!

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