"Severity" field addition to JSON output

[HarryJohnAsir]

It would be really helpful if we could have "Severity" added to the JSON output.

Based on the issue severity, Severity field can have value as below.

1. Info
2. Low
3. Medium
4. Major
5. Critical

Reference: JSON Output additions #261

[hahwul]

@HarryJohnAsir
Thank you for your opinion!
Dalfox is mostly for checking XSS, so I'm not sure if I can set and include the Severity, but I'll give it a try :D

[hahwul]

In order to simplify and output Severity, I would like to mark it as Low/Medium/High by referring to the OWASP Risk Rating and CVSSv3.

• https://owasp.org/www-community/OWASP_Risk_Rating_Methodology
• https://www.first.org/cvss/specification-document

Severity	Attribute
Low	- BuiltIn-Grep
Medium	- XSS (Reflected payload) - BAV-CRLF - BAV-SQLi (SQL Error) - BAV-OpenRedirect
High	* XSS (Verified payload) - BAV-SSTI

Dalfox's severity (not fixed yet.)

In fact, XSS is not reported critically in CVSS, etc. In particular, I think there is a limitation in the risk grade because the a scanner cannot create an Exploit chain.

[HarryJohnAsir]

Thank you.

[hahwul]

Test

[hahwul]

@HarryJohnAsir
Close the issue by adding the function. It's going to be released on v2.6.3. If there's nothing special, I think it'll be released this weekend!

Thank you :D

[HarryJohnAsir]

Thank you