Affected versions of Atlassian Jira Server and Data Center allow an unauthenticated user to enumerate users via an Information Disclosure vulnerability in the /ViewUserHover.jspa endpoint.
This vulnerability was discovered by Mikhail Klyuchnikov of Positive Technologies.
- version < 7.13.6
- 8.0.0 ≤ version < 8.5.7
- 8.6.0 ≤ version < 8.12.0