The WP-Members plugin for WordPress, developed by Chad Butler, contains a stored cross-site scripting vulnerability identified as CVE-2025-50051. This vulnerability is due to improper neutralization of input during web page generation, which allows an attacker with limited privileges and requiring user interaction to inject malicious scripts that persist on the site. The affected versions include all releases up to and including 3.5.4. The vulnerability has a CVSS 3.1 score of 6.5, reflecting a medium severity with network attack vector, low attack complexity, requiring privileges and user interaction, and impacts on confidentiality, integrity, and availability. No patch or official fix information is provided in the available data.

Successful exploitation of this stored XSS vulnerability could allow an attacker to execute arbitrary scripts in the context of other users, potentially leading to information disclosure, session hijacking, or other malicious actions affecting confidentiality, integrity, and availability. The attack requires the attacker to have some privileges and user interaction, which limits the ease of exploitation. No known exploits in the wild have been reported to date.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider restricting privileges to trusted users and be cautious of user-generated content. Monitor official Chad Butler WP-Members advisories for updates and apply patches promptly once available.