CVE-2026-113382
Received Received - Intake

Unrestricted File Upload in Arizu-ID Fast-Tunnel

Publication date: 2026-10-20

Last updated on: 2026-10-20

Assigner: VulDB

Description
A security vulnerability has been detected in arizu-id fast-tunnel 1.0.0. Affected by this issue is the function ZipArchive::extractTo of the file backend/api_plugins.php of the component Plugin Installer. Such manipulation of the argument plugin_file leads to unrestricted upload. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 1.0.1 can resolve this issue. The name of the patch is 04573681420295f7b327c9da3b101aed2f3cf432. It is advisable to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

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Meta Information

Published
2026-10-20
Last Modified
2026-10-20
Generated
2026-10-20
AI Q&A
2026-10-20
EPSS Evaluated
N/A
NVD
CVE-2026-113382
EUVD
EUVD-2026-104910

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
arizu-id fast-tunnel 1.0.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CWE-434 The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

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Executive Summary

This vulnerability is an unrestricted file upload issue in arizu-id fast-tunnel 1.0.0. It occurs in the ZipArchive::extractTo function of backend/api_plugins.php where manipulation of the plugin_file argument allows directory traversal. This leads to arbitrary file uploads outside intended directories, enabling potential remote code execution.

Detection Guidance

Detecting this vulnerability requires checking for the vulnerable version of arizu-id fast-tunnel (1.0.0) and inspecting plugin archives for directory traversal or unrestricted file uploads. Review backend/api_plugins.php for ZipArchive::extractTo usage and ensure strict path validation is implemented. Check .htaccess rules to block direct PHP execution in plugins directory.

Impact Analysis

An attacker could exploit this to upload malicious files to the server, potentially gaining control over the system. This could lead to data theft, unauthorized access, or disruption of services. The vulnerability is remotely exploitable and has a public exploit available.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR's data protection requirements and HIPAA's security rules for protected health information. Compliance may be compromised due to potential exposure of sensitive data.

Mitigation Strategies

Upgrade to fast-tunnel version 1.0.1 immediately using the provided patch 04573681420295f7b327c9da3b101aed2f3cf432. Verify that .htaccess blocks direct PHP execution in plugins directory and that plugin archives undergo strict path validation. Remove any existing vulnerable installations and audit plugin files for unauthorized uploads.

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