Input validation vulnerability in Get Custom Field Values 4.0.1

The Get Custom Field Values WordPress plugin before version 4.0.1 had a security flaw where someone with a low level of access (such as a contributor) could use code to perform an attack called Cross-Site Scripting. This code would be visible on the page

Detected in:

Get Custom Field Values fixed vulnerable versions: >= * < 4.0.1

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Version compare shows which versions have a vulnerability. For example: >= 2.2.8 <= 2.2.21 means:

> from 2.2.8
= including 2.2.8 & 2.2.21
< to 2.2.21

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