Check XSS

Name: Check XSS
Rating: 5 (3 reviews)
Author: Gray Sky

Plugin helps in finding site vulnerabilities such as XSS, SQL injection and CRLF. Check XSS makes it possible for you to text XSS (CRLF and SQL commands) with context menu with just 2 mouse clicks.

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Features & Capabilities

Check XSS is a Chrome extension designed for security professionals to efficiently detect site vulnerabilities like Cross-Site Scripting (XSS), SQL injection, and CRLF issues. By adding a context menu with various payloads, it allows users to copy malicious test strings directly to their clipboard with just two mouse clicks. Users can then paste these payloads into any input field to test for vulnerabilities quickly and effectively.

This tool streamlines security testing workflows, making it easier for security engineers to identify critical issues in web applications without complex setups. With its intuitive interface and focused functionality, Check XSS enhances productivity in the web security testing process.

User Growth & Download Statistics

Add-on Developer Tools Privacy & Security

By:

Daily users:

Rating:

Version:

1.1 Last updated: 2019-10-03

Version code:

4872741

Creation date:

2019-09-11

Risk:

Permissions:

Size:

11.95KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-20

Compare stats and ranking:

Ranking

# 6,530 ▼ 128

Other rankings

#81 in inject keyword 14 ▼ 3

#150 in checker keyword 64 ▲ 1

#206 in input keyword 38 ▼ 1

#206 in plugin keyword 52 ▼ 2

#219 in commands keyword 11 ▼ 4

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For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Gray Sky

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/check-xss/

User Reviews

Good

by se*****, 2024-05-14

View all user reviews ›

Is Check XSS Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Check XSS requires very minimum permissions.

Risk impact analysis details

High Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Check XSS has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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