SECURELYN

CVE-2026-93388

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 ma…

Scores

9.8
CVSS 9.8 out of 10, critical severity.
0.9%
EPSS 0.9% chance of exploitation in the next 30 days.

The facts

Published
14 October 2026
Last changed
14 October 2026
NVD status
Deferred
Severity
Critical, CVSS 9.8 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
Known exploited
Not in the CISA Known Exploited Vulnerabilities catalogue in this build.
EPSS
0.9% chance of exploitation activity in the next 30 days (percentile 58).

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References