Vulnerability in WordPress Google Analytics Plugin Hits +3 Million Websites

MonsterInsights Google Analytics WordPress plugin XSS vulnerability affects up to +3 million websites

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The National Vulnerability Database announced that a popular Google Analytics WordPress plugin installed in over 3 million was discovered to contain a Stored Cross-Site Scripting (XSS) vulnerability.

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A Cross-Site Scripting (XSS) attack generally occurs when a part of the website that accepts user input is insecure and allows unanticipated input, like scripts or links.

Stored XSS

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The XSS vulnerability can be leveraged to obtain unauthorized access to a website and can lead to user data theft or a full site takeover.

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The non-profit Open Worldwide Application Security Project (OWASP) describes how the XSS vulnerability works:

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A stored XSS, which is arguably worse, is one in which the malicious script is stored on the website servers itself.

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The plugin, MonsterInsights – Google Analytics Dashboard for WordPress, was discovered to have the stored XSS version of the vulnerability.

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