CVE-2026-109639 in ERPNext
Summary
by MITRE • 10/13/2026
Frappe ERPNext before 15.102.0 and 16.x before 16.8.0 contains an SQL injection vulnerability in some endpoints due to missing input validation, allowing manipulation of database queries. Authenticated attackers with low privileges can send specially crafted requests to the affected endpoints to extract sensitive information from the database.
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Analysis
by VulDB Data Team • 10/13/2026
The identified security flaw resides within Frappe ERPNext versions prior to 15.102.0 and version 16.x prior to 16.8.0, representing a critical SQL injection vulnerability in specific API endpoints. This weakness stems from insufficient input validation mechanisms when processing user-supplied data for database queries. In modern web applications, particularly those built on the Frappe framework which is widely used for enterprise resource planning and customer relationship management systems, proper sanitization of inputs is paramount to prevent malicious code execution within the underlying relational database structure. The absence of rigorous checks allows attackers to inject arbitrary SQL commands that are then executed by the application server with the privileges assigned to the database user account.
From a technical perspective, this vulnerability classifies under CWE-89 Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection. When authenticated users interact with the affected endpoints, their input is directly concatenated or improperly parameterized into SQL statements without adequate escaping or validation. This allows low-privilege authenticated attackers to manipulate the logic of database queries. By crafting specific HTTP requests containing malicious payloads, these actors can bypass intended query structures, potentially retrieving data from tables they should not have access to, modifying existing records, or in severe cases, executing administrative commands depending on the database configuration and permissions granted to the application's service account.
The operational impact of this vulnerability is significant due to its potential for unauthorized data extraction. Since authentication is required but only low privileges are needed to exploit it, a large number of users within an organization could potentially serve as vectors for attack if their credentials are compromised or shared improperly. The primary consequence involves the exfiltration of sensitive information stored in the ERPNext database, which may include customer personal identifiable information, financial records, inventory details, and internal business logic configurations. This breach compromises data confidentiality and integrity, leading to potential regulatory violations such as GDPR or CCPA non-compliance, reputational damage, and loss of trust among stakeholders who rely on the system for critical business operations.
To mitigate this risk, organizations must immediately upgrade their Frappe ERPNext instances to version 15.102.0 or later, or version 16.8.0 and above, where these input validation issues have been addressed by the development team. In environments where immediate patching is not feasible due to operational constraints, temporary mitigations should include implementing strict web application firewall rules that detect and block common SQL injection patterns in HTTP requests targeting ERPNext endpoints. Additionally, enforcing principle of least privilege for database accounts used by the application can limit the scope of damage even if an injection occurs. Regular security audits and code reviews focusing on query construction practices are also recommended to prevent similar vulnerabilities from being introduced during future customizations or module developments. This incident highlights the importance of maintaining up-to-date software versions in enterprise environments where sensitive business data is processed through web interfaces.