CVE-2026-3309 Code injection in Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress
Unauthenticated attackers can execute arbitrary shortcodes via crafted billing fields in the ProfilePress WordPress plugin, potentially leading to code execution.
- 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-2026-3309?
CVE-2026-3309 is a medium-severity code injection vulnerability in properfraction Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress, published on 4 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 4.16.11. This is due to the plugin allowing user-supplied billing field values from the checkout process to be interpolated into shortcode template strings that are subsequently processed without proper sanitization of shortcode syntax. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes by submitting crafted billing field values during the checkout process.
Weakness: CWE-94
Which versions are affected by CVE-2026-3309?
How do I fix CVE-2026-3309?
No fix has been published for CVE-2026-3309 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-3309 being exploited?
There is no known exploitation of CVE-2026-3309 in the wild and no public exploit code.
Sources
Also known as GHSA-76wj-rr8p-qvr3.