# How the severity of the Vulnerability is been calculated?

**URL:** <https://community.sonarsource.com/t/how-the-severity-of-the-vulnerability-is-been-calculated/97207>\
**Category:** SonarQube Server / Community Build\
**Created:** [August 9, 2023, 6:01pm UTC](https://community.sonarsource.com/t/how-the-severity-of-the-vulnerability-is-been-calculated/97207 "2023-08-09T18:01:29Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![skumarna](https://avatars.discourse-cdn.com/v4/letter/s/bcef8e/32.png) [@skumarna](https://community.sonarsource.com/u/skumarna)\
**Post date:** [August 9, 2023, 6:01pm UTC](https://community.sonarsource.com/t/how-the-severity-of-the-vulnerability-is-been-calculated/97207/1 "2023-08-09T18:01:29Z")

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For Vulnerability, we got 5 letter grades.

(A = 0, B = Minor, C = Major, D = Critical, E = Blocker)

On what basis Vulnerability is been categorised under Minor or Major or Critical or Blocker ?

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**Author:** ![ganncamp](https://dub1.discourse-cdn.com/sonarsource/user_avatar/community.sonarsource.com/ganncamp/32/1261_2.png) [@ganncamp](https://community.sonarsource.com/u/ganncamp)\
**Post date:** [August 10, 2023, 3:45pm UTC](https://community.sonarsource.com/t/how-the-severity-of-the-vulnerability-is-been-calculated/97207/2 "2023-08-10T15:45:22Z")

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Hi,

Welcome to the community!

You’re looking for the ‘Default severities’ section in [the docs](https://docs.sonarsource.com/sonarqube/latest/extension-guide/adding-coding-rules/#coding-rule-guidelines).

&nbsp;  
HTH,  
Ann

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**Author:** ![skumarna](https://avatars.discourse-cdn.com/v4/letter/s/bcef8e/32.png) [@skumarna](https://community.sonarsource.com/u/skumarna)\
**Post date:** [August 14, 2023, 6:18pm UTC](https://community.sonarsource.com/t/how-the-severity-of-the-vulnerability-is-been-calculated/97207/3 "2023-08-14T18:18:57Z")

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Thanks Ann.

This helps