CVE-2026-66476 in Easy Digital Downloads Plugin
Summary
by MITRE • 07/27/2026
Administrator Arbitrary File Deletion in Easy Digital Downloads <= 3.6.9 versions.
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Analysis
by VulDB Data Team • 07/27/2026
The vulnerability identified in Easy Digital Downloads versions 3.6.9 and earlier represents a critical privilege escalation flaw that allows administrators to delete arbitrary files on the target system. This issue stems from insufficient input validation and improper access control mechanisms within the plugin's file management functionality. The vulnerability specifically affects the administrative interface where file deletion operations are processed, creating a path for authenticated users with administrator privileges to manipulate file paths and execute unauthorized deletion commands.
The technical implementation of this flaw resides in how the plugin handles file deletion requests through its administrative dashboard. When an administrator attempts to delete files, the system fails to properly sanitize or validate the file paths provided in the request parameters. This lack of proper input validation creates a directory traversal vulnerability that can be exploited to navigate beyond the intended file scope and target system files outside the plugin's designated directories. The flaw operates at the application layer, specifically within the file management component that processes user requests for file operations.
From an operational impact perspective, this vulnerability enables attackers who have gained administrator access to the WordPress site to delete critical system files, including configuration files, database backup files, or even core plugin files that could lead to complete site compromise. The potential damage extends beyond simple file deletion as attackers could remove essential components that would require full site restoration. This vulnerability particularly impacts organizations relying on Easy Digital Downloads for e-commerce operations, where the loss of product data, customer information, or payment processing files could result in significant financial and operational disruption.
The vulnerability maps directly to CWE-22 - Improper Limiting of a Pathname to a Restricted Directory and CWE-73 - External Control of File Name or Path, both of which are fundamental security weaknesses in file system access controls. From an attacker's perspective, this flaw aligns with ATT&CK technique T1059.001 - Command and Scripting Interpreter and T1486 - Data Encrypted for Impact, as it provides the means to disrupt system operations through file deletion. The vulnerability also intersects with T1566 - Phishing and T1078 - Valid Accounts, since an attacker would need valid administrator credentials to exploit this weakness effectively.
Mitigation strategies should begin with immediate patching of the Easy Digital Downloads plugin to version 3.6.10 or later, which contains the necessary security fixes for this vulnerability. Organizations should implement additional access controls including role-based permissions and privileged access management solutions to limit administrative privileges to only essential personnel. Network segmentation and monitoring of file system activities can help detect suspicious deletion patterns. Regular security audits of WordPress plugins and themes should be conducted to identify similar vulnerabilities, while implementing proper input validation and output encoding practices throughout the application codebase. System administrators should also establish comprehensive backup strategies that include regular automated backups of critical files and configurations to ensure rapid recovery in case of successful exploitation attempts.