# CVE-2026-40750: themagnifico52 Kids Online Store arbitrary file upload in WordPress theme

Source: https://junglewise.ai/threats/cve-2026-40750-themagnifico52-kids-online-store-arbitrary-file-upload-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-16. Updated: 2026-06-16  
License: CC BY 4.0 with a link back

CVE-2026-40750 · Severity: critical · CVSS 9.9 · Published 2026-06-16

The Kids Online Store theme for WordPress contains a critical security flaw that allows users with low-level accounts to upload malicious files to the web server. An attacker can use this to install a 'web shell,' giving them full control over the website and its data. This could lead to a complete site takeover, theft of customer information, or the site being used to host further attacks.

Vendors: [Themagnifico52](https://junglewise.ai/threats/vendors/themagnifico52).

## Quick answers

**Is CVE-2026-40750 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40750 being exploited in the wild.

**How severe is CVE-2026-40750?** Critical severity, with a CVSS score of 9.9, published 16 June 2026.

**Which products and versions are affected?** Themagnifico52 Kids Online Store <= 0.8.9.

**Is there a fix for CVE-2026-40750?** A patch was published on 2026-04-20: Version 0.9.0 released to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-40750 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-40750?** Check whether you run Themagnifico52 Kids Online Store 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 unrestricted file upload vulnerability (CWE-434) exists in the themagnifico52 Kids Online Store theme for WordPress through version 0.8.9. The flaw allows an authenticated user, even with low-level 'Subscriber' privileges, to upload files with dangerous extensions (such as .php) to the server. Because the application fails to properly validate file types or contents, an attacker can upload and execute a web shell. This results in remote code execution (RCE) and potential full system compromise. The issue is resolved in version 0.9.0.

## Affected products

- themagnifico52 Kids Online Store <= 0.8.9

## Timeline

- 2026-02-22: other: Vulnerability reported by Denver Jackson
- 2026-04-20: advisory: Patchstack published advisory details
- 2026-04-20: patched: Version 0.9.0 released to address the vulnerability
- 2026-06-16: disclosed: CVE-2026-40750 published to the NVD dataset

## References

- [https://patchstack.com/database/wordpress/theme/kids-online-store/vulnerability/wordpress-kids-online-store-theme-0-8-9-arbitrary-file-upload-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/theme/kids-online-store/vulnerability/wordpress-kids-online-store-theme-0-8-9-arbitrary-file-upload-vulnerability?_s_id=cve)