Cross-site Scripting (XSS) - Reflected in andrewpaglusch/flashpaper


Reported on

Sep 7th 2021

✍️ Description

Cross-site Scripting (XSS) refers to client-side code injection attack wherein an attacker can execute malicious scripts into a legitimate website or web application. XSS occurs when a web application makes use of unvalidated or unencoded user input within the output it generates.

The user input GET parameter k of confirm.php is unsanitized resulting reflected cross site scripting.


Apply context-dependent encoding and/or validation to user input rendered on a page



We created a GitHub Issue asking the maintainers to create a a year ago
We have contacted a member of the andrewpaglusch/flashpaper team and are waiting to hear back a year ago
Andrew Paglusch validated this vulnerability a year ago
wtwver has been awarded the disclosure bounty
The fix bounty is now up for grabs
wtwver submitted a
a year ago
Andrew Paglusch confirmed that a fix has been merged on 9736da a year ago
The fix bounty has been dropped
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