THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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The Apache Struts frameworks when forced, performs double evaluation of attributes' values assigned to certain tags so it is possible to pass in a value that will be evaluated again when a tag's attributes will be rendered.
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Adding a proper validation of each value that's coming in and it's used in tag's attributes. Or don't use forced evaluation of attribute using %{...
} syntax. Alternatively upgrade to Struts 2.3.27.
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