External risk intelligence

Restaurant Zone Theme Arbitrary File Upload Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.9)

CVE-2026-40746

A critical arbitrary file upload vulnerability exists in the Restaurant Zone theme. If reachable, an attacker with low-privileged access could upload malicious files, potentially leading to unauthorized code execution and system compromise. Confirming the use and exposure of this theme is crucial.

Unrestricted File Upload

Halo Surface Signal

Likely · external exposure

4Halo Surface Signal

The vulnerability affects a theme used in web applications. Web themes are components of web-facing sites, making them commonly reachable via the internet as part of the public web application surface.

Horizon Alert

Summary of the vulnerability and why it matters

This critical vulnerability involves arbitrary file uploads in a specific restaurant theme, potentially allowing unauthorized access and modification of systems. While direct business impact is unconfirmed, confirming relevance and exposure to this technology is the primary concern.

  • Allows unauthorized file uploads.
  • Critical risk if theme is in use.
  • Verify if the restaurant theme is deployed.

Attack Path

How an attacker could exploit the issue

An attacker with low-privileged access could upload a malicious file to the affected system, potentially allowing them to execute arbitrary code. This could lead to a complete compromise of the system.

  • Requires low-privileged access.
  • Uploading a malicious file.
  • Arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an authenticated user to upload arbitrary files to the server when the Restaurant Zone theme is used. This could impact the availability and integrity of the affected system.

  • Server files could be overwritten.
  • Unauthorized file uploads may occur.
  • System availability could be impacted.

Operational Fix

Recommended remediation, mitigation, and detection steps

The Subscriber Arbitrary File Upload vulnerability in Restaurant Zone impacts web applications, likely falling under the purview of application owners and potentially the platform or infrastructure teams responsible for the web hosting environment. The immediate practical step is to identify all instances of the affected theme, confirm its exposure and business criticality, and then assign ownership for remediation planning based on the assessed risk.

  • Application owners should prioritize this.
  • Verify exposure and business criticality.
  • Plan remediation based on risk.

Supplementary metadata

PCI scan relevance

Yes

CVE-2026-40746 — Halo PCI Relevance: Yes. Under typical PCI ASV external scan criteria, this issue may be flagged for scan prioritization.

This arbitrary file upload vulnerability in Restaurant Zone can lead to critical security risks, making it relevant for PCI scans as it could cause a scan failure. High-severity vulnerabilities require immediate attention for compliance.

Scan-prioritization guidance only—not a PCI DSS certification or ASV attestation.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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Frequently asked questions

What is Restaurant Zone and how is it used?

Restaurant Zone is a theme designed for web applications, commonly used to manage the layout, design, and presentation of websites for dining establishments. It functions as a component within a content management system, allowing site owners to customize their digital storefronts.

What does CVE-2026-40746 mean by arbitrary file upload?

This vulnerability is classified as CWE-434, meaning the software does not properly restrict the types of files a user can upload to the server. By exploiting this flaw, an unauthorized person could place malicious files into the web application's directory, potentially leading to unauthorized code execution.

How does an attacker trigger this vulnerability?

An attacker needs low-privileged access, such as a subscriber account, to interact with the file upload functionality. It is important to note that this is not a public, unauthenticated flaw; the ability to upload these files relies on the attacker having an existing, authorized role within the application.

Do I need to worry if my site is not internet-facing?

Halo Surface Signal indicates that because this is a web theme, it is frequently used on public-facing sites, making it highly reachable via the internet. If your installation is strictly internal, the risk profile differs, but you should still assess whether the theme is deployed in any environment that could be accessed by untrusted users.

What should I do if I run the Restaurant Zone theme?

First, locate all websites or environments where the Restaurant Zone theme is currently installed. Once identified, evaluate whether the theme is essential for business operations. If it is, coordinate with your technical team to plan for updates or alternative configurations to mitigate the risk of unauthorized file modifications.

References

Sources and related resources

Primary sources: NVD, CVE.org.

NVDPublished