Printcart Store <= 2.13.2 - Unauthenticated Arbitrary File Upload via nbu_crop_image 'url' Parameter
Summary
| CVE | CVE-2026-19803 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-11-07 04:17:29 UTC |
| Updated | 2026-11-08 19:17:39 UTC |
| Description | The Printcart Store – Web to Print Product Designer for WooCommerce plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.13.2. This is due to the `nbu_crop_image` AJAX handler accepting a user-supplied `url` parameter that `Nbdesigner_IO::convert_url_to_path()` concatenates onto the uploads base directory without normalizing or stripping `../` sequences, and then deriving both the output directory and output file extension via `pathinfo()` from the same attacker-controlled path — with no `stripImage()` call before `writeImage()` is invoked. This makes it possible for unauthenticated attackers to write attacker-controlled PHP content to arbitrary locations outside the uploads directory, resulting in remote code execution when the written file is subsequently requested. This vulnerability is only exploitable when the `nbdesigner_upload_popup_style` site option is set to `a` (Advanced Upload Popup), which causes the handler to be registered for unauthenticated requests; however, the required `save-design` nonce is printed on the fully public frontend `upload-design-file` page, making it trivially obtainable by any anonymous visitor once that configuration is active. |
Risk And Classification
Primary CVSS: v3.1 9.8 CRITICAL from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.009620000 probability, percentile 0.618530000 (date 2026-11-09)
Problem Types: CWE-94 | CWE-94 CWE-94 Improper Control of Generation of Code
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Printcart | Printcart Store Web To Print Product Designer For WooCommerce | affected 2.13.2 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| plugins.trac.wordpress.org/changeset | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/printcart-integration/tags/2.8.4/includes/class.advan... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/printcart-integration/tags/2.8.4/includes/class-util.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/printcart-integration/tags/2.8.4/includes/class-util.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/printcart-integration/tags/2.8.4/includes/class.advan... | [email protected] | plugins.trac.wordpress.org | |
| www.wordfence.com/threat-intel/vulnerabilities/id/2525ed97-b701-4f95-8d8c-202e8... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/printcart-integration/tags/2.8.4/includes/class.advan... | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: nudien (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-11-06T15:17:27.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.