Description
The /rest/api/1.0/render resource in Jira Server and Data Center before version 8.5.13, from version 8.6.0 before version 8.13.5, and from version 8.14.0 before version 8.15.1 allows remote anonymous attackers to determine if a username is valid or not via a missing permissions check.
Remediation
References
Related Vulnerabilities
WordPress Plugin EDD Favorites Cross-Site Scripting (1.0.6)
Moodle Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-2156)
WordPress Plugin Interactive Geo Maps Cross-Site Scripting (1.5.8)
OpenSSL Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-0703)