CVE-2015-9512 in CSV Manager Extension
Summary
by MITRE
The Easy Digital Downloads (EDD) CSV Manager extension for WordPress, as used with EDD 1.8.x before 1.8.7, 1.9.x before 1.9.10, 2.0.x before 2.0.5, 2.1.x before 2.1.11, 2.2.x before 2.2.9, and 2.3.x before 2.3.7, has XSS because add_query_arg is misused.
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Analysis
by VulDB Data Team • 02/08/2025
The vulnerability identified as CVE-2015-9512 affects the Easy Digital Downloads CSV Manager extension for WordPress, a popular e-commerce plugin that enables merchants to manage digital product sales and downloads. This security flaw exists in multiple versions of the EDD plugin spanning from version 1.8.x through 2.3.x, specifically before the patched releases 1.8.7, 1.9.10, 2.0.5, 2.1.11, 2.2.9, and 2.3.7 respectively. The issue stems from improper handling of user input within the CSV import functionality, creating a cross-site scripting vulnerability that could be exploited by malicious actors to execute arbitrary code in the context of a victim's browser.
The technical root cause of this vulnerability lies in the improper usage of WordPress's add_query_arg function, which is designed to add or update query arguments in URLs. When the CSV Manager extension processes user-supplied data during import operations, it fails to properly sanitize or escape the input before incorporating it into query parameters. This misapplication allows attackers to inject malicious JavaScript code through crafted CSV files or parameters that are then executed when the application generates URLs containing these unfiltered inputs. The vulnerability manifests as a classic cross-site scripting flaw that operates at the application layer, making it particularly dangerous as it can be exploited through various attack vectors including file uploads, URL manipulation, or parameter injection.
The operational impact of this vulnerability extends beyond simple data corruption or user experience degradation. Attackers could leverage this XSS flaw to hijack user sessions, steal sensitive authentication tokens, redirect users to malicious websites, or perform actions on behalf of authenticated users within the WordPress admin interface. Given that Easy Digital Downloads is commonly used by businesses handling financial transactions and digital products, the potential for financial fraud, data theft, or complete administrative compromise is significant. The vulnerability affects not only the end users but also the website administrators who may unknowingly process malicious CSV files, potentially leading to complete system compromise through session hijacking or privilege escalation attacks.
The security implications of this vulnerability align with CWE-79, which specifically addresses cross-site scripting flaws in web applications, and can be mapped to ATT&CK technique T1059.007 for script injection attacks. Organizations using vulnerable versions of EDD should immediately implement mitigations including applying the vendor-provided patches, implementing proper input validation and output sanitization for all user-supplied data, and restricting administrative access to CSV import functionality. Additional protective measures include monitoring for suspicious file uploads, implementing web application firewalls, and conducting regular security assessments of WordPress plugins to identify similar vulnerabilities that could compromise the overall security posture of the web application environment.