CVE-2026-17563 WP User Frontend < 4.3.11 - Unauthenticated Post Creation via Subscription-Gated Form
Unauthenticated attackers can bypass subscription checks to create and publish posts in the WP User Frontend plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-17563?
CVE-2026-17563 is a medium-severity missing authorization vulnerability in Unknown User Frontend, published on 2 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-17563?
How do I fix CVE-2026-17563?
No fix has been published for CVE-2026-17563 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-17563 being exploited?
There is no known exploitation of CVE-2026-17563 in the wild and no public exploit code.
Sources
Also known as GHSA-rgv4-fwhv-pq9x.