CVE-2026-32536 in Green Downloads Plugin
Summary
by MITRE • 03/25/2026
Unrestricted Upload of File with Dangerous Type vulnerability in halfdata Green Downloads halfdata-paypal-green-downloads allows Using Malicious Files.This issue affects Green Downloads: from n/a through <= 2.08.
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Analysis
by VulDB Data Team • 04/01/2026
The vulnerability identified as CVE-2026-32536 represents a critical security flaw in the halfdata Green Downloads plugin for WordPress, specifically affecting versions from the initial release through version 2.08. This issue constitutes an unrestricted file upload vulnerability that allows attackers to upload malicious files with dangerous file types, potentially leading to remote code execution or complete system compromise. The vulnerability stems from insufficient validation and sanitization of file uploads within the plugin's file handling mechanisms, creating an attack surface where malicious actors can bypass security controls and deploy harmful payloads.
The technical implementation of this vulnerability resides in the plugin's handling of file uploads without proper type checking or content validation. Attackers can exploit this weakness by uploading files with extensions that are not properly restricted, such as php, aspx, or other executable formats that could be processed by the web server. The flaw operates at the application layer and specifically targets the file upload functionality of the halfdata-paypal-green-downloads plugin, which is designed to handle download requests for digital products. This vulnerability aligns with CWE-434, which describes the weakness of unrestricted upload of file with dangerous type, and represents a direct violation of secure coding practices for file handling operations. The vulnerability is particularly concerning as it allows for the execution of arbitrary code on the target server, potentially enabling attackers to establish persistent access, escalate privileges, or conduct further reconnaissance.
The operational impact of this vulnerability extends beyond simple unauthorized file uploads, as it creates a pathway for attackers to gain control over the affected WordPress installation. Successful exploitation could result in complete system compromise, data exfiltration, or the deployment of malware across the network. The vulnerability affects the availability and integrity of the system, as attackers can upload malicious files that may contain backdoors, web shells, or other malicious payloads that persist beyond the initial attack. The risk is amplified by the fact that the plugin is designed to handle payment-related downloads, making it a prime target for attackers seeking to exploit e-commerce systems. This vulnerability also maps to several ATT&CK techniques including T1059 for command and script injection, T1505 for server-side injection, and T1078 for valid accounts, as attackers may use the compromised system to establish persistent access and move laterally within the network infrastructure.
Mitigation strategies for CVE-2026-32536 should focus on immediate remediation through plugin updates to version 2.09 or later, which should contain proper file type validation and sanitization mechanisms. Organizations should implement additional security controls including restrictive file upload policies that limit file types to safe formats only, enforce strict file content validation, and implement proper access controls for upload directories. The security architecture should incorporate multiple layers of defense including web application firewalls, proper input validation, and regular security scanning of uploaded files. Additionally, system administrators should monitor file upload activities and implement logging mechanisms to detect suspicious upload patterns. The vulnerability demonstrates the critical importance of proper file handling security measures and highlights the need for continuous security testing of third-party plugins in WordPress environments. Organizations should also consider implementing automated patch management systems to ensure timely updates and reduce the window of exposure for known vulnerabilities.