Cross-site Scripting (XSS) - Reflected in falconchristmas/fpp


Reported on

Jun 27th 2021

✍️ Description

GET parameter ?plugin= of plugin.php is vulnerable to reflected cross site scripting. plugin.php sends unvalidated data to a web browser, which can result in the browser executing malicious code. In this case the data is sent at printf() in plugin.php

🕵️‍♂️ Proof of Concept

  1. Visit /plugin.php?plugin=</script><script>alert(1)&page= and XSS will be pop up.

💥 Impact

The attacker can:

Perform any action within the application that the user can perform. View any information that the user is able to view. Modify any information that the user is able to modify. Initiate interactions with other application users, including malicious attacks, that will appear to originate from the initial victim user.


We have contacted a member of the falconchristmas/fpp team and are waiting to hear back a year ago
Greg Hormann confirmed that a fix has been merged on e07b9d a year ago
Greg Hormann has been awarded the fix bounty
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