Critical-Severity Unrestricted File Upload Flaw in Printcart Store – Web to Print Product Designer for WooComme Tracked as CVE-2026-93388
A newly published critical vulnerability in Printcart Store – Web to Print Product Designer for WooComme carries a CVSS score of 9.8. Here is what is affected and how to respond.
Key points
- CVE-2026-93388 affects Printcart Store – Web to Print Product Designer for WooComme.
- CVSS 9.8 (Critical).
- No exploitation confirmed yet.
A critical unrestricted file upload tracked as CVE-2026-93388 has been published in the National Vulnerability Database for Printcart Store – Web to Print Product Designer for WooComme, with a CVSS base score of 9.8.
At a glance
- CVE
- CVE-2026-93388
- Product
- Printcart Store – Web to Print Product Designer for WooComme
- CVSS
- 9.8 Critical
- Weakness
- unrestricted file upload
- Exploited
- No known exploitation
What is the vulnerability?
The NVD entry states: 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 nb
Affected versions
| Vendor | Product | Versions |
|---|---|---|
| Printcart | Printcart Store – Web to Print Product Designer for WooCommerce | up to 2.9.1 |
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Is it being exploited?
There is no public confirmation of exploitation at the time of publication. It does not appear in CISA's Known Exploited Vulnerabilities catalog. We will update this report if that changes.
What should you do?
- Identify whether the affected product and versions run in your environment.
- Apply the vendor update listed in the advisory as soon as it is available.
- Limit network exposure of the affected service until it is patched.
- Monitor the vendor advisory for updated guidance or exploitation reports.
What to do and how to stay safe: CVE-2026-93388
- Vulnerability severity scores ignore your specific architecture and context.
- Exploitability depends on network exposure and user behavior, not just code flaws.
- Prioritization requires continuous asset inventory and threat intelligence alignment.
Risk-based vulnerability management focuses your limited resources on the flaws that actually threaten your business. Start by mapping your critical assets and checking for active exploits to prioritize your backlog.
Step-by-step guide: Risk-Based Vulnerability Management: Prioritize Fixes by Actual Danger
General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What is CVE-2026-93388?
CVE-2026-93388 is a unrestricted file upload vulnerability in Printcart Store – Web to Print Product Designer for WooComme.
How severe is CVE-2026-93388?
It has a CVSS score of 9.8 Critical.
Is CVE-2026-93388 being exploited?
There is no public confirmation of exploitation at the time of publication.
