CVE-2026-93388 File upload in Printcart Store – Web to Print Product Designer for WooCommerce
Unauthenticated attackers can upload arbitrary PHP files via a vulnerable AJAX action to execute remote code on the server.
- 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-2026-93388?
CVE-2026-93388 is a critical vulnerability in Printcart Store – Web to Print Product Designer for WooCommerce, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Printcart Store (PCDesigner / NB Designer) plugin for WooCommerce is vulnerable to unauthenticated arbitrary file upload leading to remote code execution in all versions up to, and including, 2.9.1 The nbdesigner_copy_image_from_url AJAX action is registered for logged-out callers (wp_ajax_nopriv_), and its Google Drive branch rebuilds the destination filename from the raw, attacker-supplied gapi[name] parameter — bypassing the jpg/jpeg/png/gif allow-list applied on the other branch — and writes the fetched bytes to a web-accessible directory (wp-content/uploads/nbdesigner/temp/). This makes it possible for unauthenticated attackers to write a .php file to a web-served, PHP-executing location and, by supplying their own Google Drive file and OAuth token as the content source, execute arbitrary code on the server. The required save-design nonce is handed to anonymous callers by the nbd_check_use_logged_in endpoint, so it presents no barrier.
Weakness: CWE-434
Which versions are affected by CVE-2026-93388?
How do I fix CVE-2026-93388?
No fix has been published for CVE-2026-93388 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-93388 being exploited?
There is no known exploitation of CVE-2026-93388 in the wild and no public exploit code.
Sources
Also known as GHSA-p5c5-938c-g6r5.