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My Calendar 2.5.16 Cross Site Scripting

🗓️ 18 Apr 2018 00:00:00Reported by Luigi GubelloType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 24 Views

Vulnerability in My Calendar 2.5.16 allows authenticated user to inject arbitrary JavaScript code in event_time_label input, affecting event page and admin panel. Fixed in My Calendar 2.5.17.

Code
`An authenticated user, who can add new events, can inject arbitrary javascript code via event_time_label input. The arbitrary code runs both on the event page and in the admin panel.  
  
In my-calendar-event-manager.php, line 1873, the variable $eventTime is not sanitized.  
  
Vulnerability is fixed in My Calendar 2.5.17.  
  
Proof of Concept: https://www.gubello.me/blog/my-calendar-2-5-16-authenticated-stored-xss/  
Video PoC: https://www.youtube.com/watch?v=OvoEiJd6ggY  
  
`

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