Information disclosure issue in the comment notification feature - CVE-2021-39120

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to learn when a restricted comment is removed from an issue via an information disclosure vulnerability in the comment notification functionality.

The affected versions are before version 8.18.0.

*Affected versions:*

• version < 8.18.0

*Fixed versions:*

• 8.18.0