JQL filter for Webhooks doesn't work correctly when "Comment" and "Worklog" related events are fired - CVE-2017-18104

Security information

The Webhooks component of Atlassian Jira before version 7.6.7 and from version 7.7.0 before version 7.11.0 allows remote attackers who are able to observe or otherwise intercept webhook events to learn information about changes in issues that should not be sent because they are not contained within the results of a specified JQL query.

Summary

JQL filter for Webhooks dosn't work correctly when Comment or Worklog related events are fired.

Steps to Reproduce

1. Create an webhook as follows
   • Issue related events
     • JQL: project = <PROJECTKEY>
     • Issue: created, updated
     • Comment: created, updated
     • Worklog: created,updated
       
2. Comment or log work on an issue in a project aside from the one which is specified with the JQL

Expected Results

The webhook shouldn't be fired.

Actual Results

The webhook was fired.

Notes

When it comes to NOT "Comment" or "Worklog" related events (like creating issue, updating issue),
the JQL filters the events correctly.