# CVE-2026-19803: Printcart Store Web to Print arbitrary file upload in WordPress plugin

Source: https://junglewise.ai/threats/cve-2026-19803-the-printcart-store-web-to-print-product-designer-for-woocommerce  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-07. Updated: 2026-11-07  
License: CC BY 4.0 with a link back

CVE-2026-19803 · Severity: critical · CVSS 9.8 · Published 2026-11-07

The Printcart Store plugin for WooCommerce allows unauthenticated attackers to upload arbitrary files, including PHP code, to any location on a web server. When a site uses the Advanced Upload Popup configuration, attackers can write malicious scripts that execute with web server privileges, giving them complete control over the WordPress site and underlying server.

Vendors: [Printcart](https://junglewise.ai/threats/vendors/printcart).

## Quick answers

**Is CVE-2026-19803 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-19803 being exploited in the wild.

**How severe is CVE-2026-19803?** Critical severity, with a CVSS score of 9.8, published 7 November 2026.

**Which products and versions are affected?** Printcart Store – Web to Print Product Designer for WooCommerce up to and including 2.13.2.

**Is there a fix for CVE-2026-19803?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-19803 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-19803?** Check whether you run Printcart Store – Web to Print Product Designer for WooCommerce 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.

## Technical details

An unauthenticated AJAX handler (`nbu_crop_image`) accepts a `url` parameter that is concatenated directly to the uploads directory without path normalization, allowing directory traversal via `../` sequences. The output filename and extension are derived from the attacker-controlled path via `pathinfo()`, and the image is written without validation. This requires the `nbdesigner_upload_popup_style` site option set to "Advanced Upload Popup" mode, but the required nonce is publicly obtainable from the upload page.

## Affected products

- Printcart Store – Web to Print Product Designer for WooCommerce up to and including 2.13.2

## Timeline

- 2026-11-07: disclosed

## References

- [https://plugins.trac.wordpress.org/browser/printcart-integration/tags/2.8.4/includes/class-util.php](https://plugins.trac.wordpress.org/browser/printcart-integration/tags/2.8.4/includes/class-util.php)
- [https://plugins.trac.wordpress.org/browser/printcart-integration/tags/2.8.4/includes/class-util.php](https://plugins.trac.wordpress.org/browser/printcart-integration/tags/2.8.4/includes/class-util.php)