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 3 months ago
We have contacted a member of the andrewpaglusch/flashpaper team and are waiting to hear back 3 months ago
andrewpaglusch validated this vulnerability 3 months ago
wtwver has been awarded the disclosure bounty
The fix bounty is now up for grabs
wtwver submitted a
3 months ago
andrewpaglusch confirmed that a fix has been merged on 9736da 3 months ago
The fix bounty has been dropped