CVE-2023-3996: Armemberplugin Armember

Medium severity, CVSS 4.8. EPSS: 0.5% chance of exploitation in the next 30 days.

The ARMember Lite - Membership Plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 4.0.16 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Affected products

Published 2023-10-20. Last modified 2026-06-17.