CVE-2026-109638 in ERPNext
Summary
by MITRE • 10/13/2026
Frappe ERPNext before 15.110.0 and 16.x before 16.21.0 contains a SQL injection vulnerability in some endpoints caused by missing input validation. Authenticated attackers can send specially crafted requests to these endpoints to manipulate database queries and 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 15.110.0 and version 16.x prior to 16.21.0, representing a critical SQL injection vulnerability that stems directly from insufficient input validation mechanisms in specific API endpoints. This architectural weakness allows malicious actors who have already obtained valid authentication credentials to manipulate the underlying database queries by injecting arbitrary Structured Query Language code through specially crafted HTTP requests. The root cause is not an absence of authentication but rather a failure to sanitize or parameterize user-supplied data before it is concatenated into SQL statements, a classic implementation error that undermines the integrity and confidentiality of the application's data layer.
From a technical perspective, this vulnerability falls under the category of CWE-89 Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection. The attacker leverages their authenticated status to bypass initial access controls and targets endpoints where input parameters are directly interpolated into database commands without proper escaping or prepared statement usage. By injecting malicious payloads such as UNION-based queries or boolean-based blind injection techniques, the adversary can alter the logic of the original query. This manipulation enables the extraction of sensitive data stored in the ERPNext database, including but not limited to user credentials, financial records, customer personal information, and internal business configurations that are typically protected by role-based access controls within the application layer.
The operational impact of this vulnerability is severe due to the comprehensive nature of Frappe ERPNext as an enterprise resource planning system. Since authenticated users often possess varying levels of privilege depending on their roles, a successful exploitation could lead to unauthorized disclosure of highly confidential business intelligence and personally identifiable information. Furthermore, if the database server runs with elevated privileges or has network access to other systems, the attacker might escalate the attack beyond data exfiltration to include remote code execution or complete system compromise. This undermines trust in the platform's security posture and exposes organizations to significant regulatory compliance risks under frameworks such as GDPR or HIPAA, depending on the nature of the exposed data.
To mitigate this risk, immediate action is required by upgrading Frappe ERPNext to version 15.110.0 or later for the v15 branch, or version 16.21.0 and later for the v16 branch, as these releases contain patches that enforce strict input validation and utilize parameterized queries to prevent SQL injection attacks. In environments where immediate patching is not feasible due to operational constraints, organizations should implement web application firewalls configured with rules specifically designed to detect and block common SQL injection patterns in HTTP request parameters. Additionally, enforcing the principle of least privilege for database accounts used by the ERPNext application can limit the potential damage if an exploitation attempt succeeds, ensuring that even successful injections cannot perform destructive operations such as dropping tables or modifying system configurations. Regular security audits and code reviews focusing on data access layers are also recommended to prevent similar vulnerabilities from being introduced in future development cycles.