Auth bypass in User Frontend
CVE-2026-17563
The User Frontend WordPress plugin before 4.3.11 does not enforce its subscription-purchase requirement when processing frontend post submissions, only when rendering the form, allowing unauthenticated users to create and, depending on the form's configuration, immediately publish posts through forms restricted to paying subscribers.
Vulnerability class: Broken Access Control
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Unknown User Frontend
Weakness classification (CWE)
References
- contact@wpscan.com (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-17563?
- CVE-2026-17563 is a medium-severity vulnerability in User Frontend, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-09-02.
- How severe is CVE-2026-17563?
- Medium severity. CVSS v3 base score is 5.3 out of 10.