CVE-2026-27067 in Mobile App Editor Plugin
Summary
by MITRE • 03/19/2026
Unrestricted Upload of File with Dangerous Type vulnerability in Syarif Mobile App Editor allows Upload a Web Shell to a Web Server.This issue affects Mobile App Editor: from n/a through 1.3.1.
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Analysis
by VulDB Data Team • 03/23/2026
The vulnerability identified as CVE-2026-27067 represents a critical security flaw in the Syarif Mobile App Editor application that enables unauthorized file uploads with potentially malicious content. This issue stems from inadequate input validation and access control mechanisms within the mobile application editor component, specifically affecting versions ranging from the initial release through 1.3.1. The vulnerability classification aligns with CWE-434 which describes insecure file upload vulnerabilities where applications allow users to upload files without proper restrictions on file types or content validation. The flaw creates a pathway for attackers to bypass normal security controls and deploy malicious web shells directly onto target web servers through the mobile application editor interface.
The technical implementation of this vulnerability exploits the lack of proper file type validation and content inspection within the upload functionality of the Syarif Mobile App Editor. When users attempt to upload files through the application interface, the system fails to properly validate the file extensions, MIME types, or actual file content, allowing attackers to submit executable scripts or web shells that can be executed on the web server. This unrestricted upload capability directly enables arbitrary code execution on the target system, as the uploaded web shell files can be accessed through web requests and executed with the privileges of the web server process. The vulnerability demonstrates a fundamental failure in the principle of least privilege and proper input sanitization, creating a persistent backdoor that attackers can leverage for continued access and further exploitation of the compromised system.
The operational impact of this vulnerability extends beyond simple unauthorized file uploads to encompass complete system compromise and potential data exfiltration. Attackers who successfully exploit this vulnerability can establish persistent access to the web server, execute commands with elevated privileges, and potentially escalate their access to other systems within the network. The web shell deployment enables attackers to perform reconnaissance activities, install additional malware, and maintain long-term access to the compromised infrastructure. This vulnerability directly maps to several attack techniques within the MITRE ATT&CK framework, particularly covering T1190 for Exploit Public-Facing Application and T1059 for Command and Scripting Interpreter. The affected scope includes not only the immediate web server but also any applications or services that depend on the compromised system, potentially leading to widespread data breaches and system compromise across the organization's digital infrastructure.
Mitigation strategies for CVE-2026-27067 require immediate implementation of comprehensive file upload restrictions and validation mechanisms. Organizations should implement strict file type filtering that rejects executable files and scripts, enforce proper MIME type checking, and conduct thorough content analysis of uploaded files to detect malicious payloads. The recommended approach includes deploying web application firewalls to monitor and filter suspicious upload activities, implementing proper access controls that restrict upload permissions to authorized users only, and regularly updating the Syarif Mobile App Editor to versions that address this vulnerability. Additionally, organizations should conduct thorough security audits of their web applications, implement proper logging and monitoring of file upload activities, and establish incident response procedures to quickly detect and respond to potential exploitation attempts. Regular security testing including penetration testing and vulnerability scanning should be performed to identify similar weaknesses in other applications and systems that may be vulnerable to similar attack vectors.