CVE-2026-93388: Printcart Store PCDesigner plugin arbitrary file upload to RCE

CVE-2026-93388 · Severity: critical · CVSS 9.8 · Published 2026-10-14

The Printcart Store plugin (also called PCDesigner or NB Designer) extends WooCommerce to handle custom product design and printing. An unauthenticated attacker can upload a malicious PHP file to the server without logging in, leading to complete remote code execution and full compromise of the website and underlying server.

Vendors: Printcart.

Quick answers

Is CVE-2026-93388 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-93388 being exploited in the wild.
How severe is CVE-2026-93388?
Critical severity, with a CVSS score of 9.8, published 14 October 2026.
Which products and versions are affected?
Printcart Store (PCDesigner / NB Designer) up to 2.9.1.
Is there a fix for CVE-2026-93388?
Yes: fixed in 2.9.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-93388 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-93388?
Check whether you run Printcart Store (PCDesigner / NB Designer) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 2.9.2

Technical details

The nbdesigner_copy_image_from_url AJAX action is accessible to unauthenticated users and improperly validates file uploads from Google Drive. The vulnerability bypasses file type restrictions by rebuilding the destination filename from the attacker-supplied gapi[name] parameter, allowing .php files to be written to the web-accessible wp-content/uploads/nbdesigner/temp/ directory. The required nonce is also freely issued to anonymous callers, eliminating any CSRF protection.

Affected products

  • Printcart Store (PCDesigner / NB Designer) up to 2.9.1

Timeline

  • 2026-10-14: disclosed

References

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