The Download Manager WordPress plugin by codename065 suffers from a reflected XSS vulnerability (CWE-79) via the 'user_ids' parameter in versions up to 3.3.23. This vulnerability arises from improper neutralization of input during web page generation, allowing unauthenticated attackers to inject malicious scripts that execute in the context of users who interact with crafted URLs. The CVSS 3.1 score is 6.1 (medium), with attack vector network, low attack complexity, no privileges required, user interaction required, scope changed, and low impact on confidentiality and integrity but no impact on availability. No patch or remediation details are provided, and no exploits are known in the wild.

Successful exploitation allows an unauthenticated attacker to execute arbitrary scripts in the context of a victim user, potentially leading to information disclosure or session hijacking. The impact is limited to confidentiality and integrity with no availability impact. The vulnerability requires user interaction (clicking a crafted link) and affects all plugin versions up to 3.3.23.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should exercise caution with untrusted links involving the 'user_ids' parameter in the Download Manager plugin. Monitoring vendor channels for updates is recommended.