The Roles & Capabilities plugin for WordPress suffers from a reflected XSS vulnerability due to the use of add_query_arg without proper escaping of URL parameters. This flaw exists in all versions up to 1.1.9 and enables unauthenticated attackers to inject arbitrary web scripts. Exploitation requires user interaction, such as clicking a malicious link, which then executes the injected script in the context of the victim's browser session.

Successful exploitation can lead to limited confidentiality and integrity impacts by executing arbitrary scripts in the victim's browser. This can result in actions such as session hijacking or unauthorized actions performed with the victim's privileges. There is no impact on availability. No known exploits are reported in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should avoid clicking on suspicious links related to the plugin and consider disabling or removing the plugin if possible. Monitor the vendor's channels for updates regarding a security patch.