Description
By accessing the endpoint /secure/popups/UserPickerBrowser.jspa?max=10, an unauthenticated attack can retrieve the Jira's users.
Remediation
Consider restricting unauthenticated access to this endpoint.
References
Related Vulnerabilities
Joomla! Core 3.x.x Information Disclosure (3.0.0 - 3.9.19)
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WordPress Plugin WP-Live Chat by 3CX Information Disclosure (8.0.28)
WordPress Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2017-5487)