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.

Check XSS - Firefox Add-on
Check XSS is a Firefox add-on that provides a context menu with different payloads for testing vulnerabilities like XSS, CRLF, and SQL injection. It allows security engineers to easily copy and test payloads on input forms, improving efficiency and ease of work.
Add-on stats
Manifest V2
Weekly download count: 28
Firefox on Android: No
Permissions:
- menus
- activeTab
- clipboardRead
- clipboardWrite
Size: 12.24K
Full description: See detailed description
Source: Firefox Browser Add-ons
User reviews
Good
by sevendust, 2024-05-14
Add-on safety
Risk impact
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.
- Low ******* ****** ** *** ********* ********
Risk likelihood
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.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
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