CVE-2026-109609 in ERPNext
Summary
by MITRE • 10/13/2026
Frappe ERPNext before 15.119.1 and 16.x before 16.32.0 contains an SQL injection vulnerability in some endpoints that lack input validation. Authenticated attackers with low privileges can send specially crafted requests to these endpoints to inject SQL and extract sensitive information from the ERPNext database.
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Analysis
by VulDB Data Team • 10/13/2026
The identified security flaw resides within Frappe ERPNext versions prior to 15.119.1 for version 15.x and before 16.32.0 for version 16.x, representing a critical failure in input validation mechanisms across specific API endpoints. This vulnerability is classified as an SQL injection, which corresponds to CWE-89 in the Common Weakness Enumeration standard. The root cause of this issue stems from the application's handling of user-supplied data within database query construction processes without adequate sanitization or parameterization. In a properly secured system, all input fields interacting with backend databases must be treated as untrusted and processed through prepared statements to ensure that data is never interpreted as executable code by the SQL engine. The absence of these safeguards in certain endpoints allows malicious actors to manipulate the structure of database queries, thereby bypassing intended logic controls and accessing or modifying data beyond their authorized scope.
The operational impact of this vulnerability is significant due to its accessibility to authenticated users with low privileges. Unlike many high-severity vulnerabilities that require administrative access, this flaw can be exploited by any user who has successfully logged into the ERPNext environment, regardless of their role or permission level within the organization's hierarchy. An attacker leveraging this weakness can construct specially crafted HTTP requests containing malicious SQL payloads designed to extract sensitive information from the underlying database. This could include customer personal identifiable information, financial records, proprietary business data, and internal system configurations. The ability for low-privilege users to escalate their effective access through data exfiltration undermines the principle of least privilege and compromises the confidentiality integrity of the entire enterprise resource planning ecosystem.
From a tactical perspective, this vulnerability aligns with MITRE ATT&CK technique T1059 Command and Scripting Interpreter, specifically SQL injection variants often categorized under Data from Information Repositories or potentially T1190 Exploit Public-Facing Application depending on how the endpoint is exposed. The exploitation path typically involves identifying an affected endpoint, determining which parameters are susceptible to injection, and then using tools like sqlmap or manual payload crafting to extract data via blind SQL techniques or error-based extraction methods. This process allows attackers to map out database schemas, identify table structures, and retrieve specific rows of sensitive content without triggering immediate detection mechanisms that might monitor for high-privilege administrative actions.
Mitigation strategies must prioritize the immediate application of vendor-provided patches to upgrade ERPNext to version 15.119.1 or later for v15 installations, or version 16.32.0 and later for v16 installations. These updates contain code changes that implement proper input validation and parameterized queries within the affected endpoints. In scenarios where immediate patching is not feasible due to operational constraints, organizations should employ web application firewalls configured with rulesets capable of detecting SQL injection patterns in HTTP requests targeting ERPNext interfaces. Additionally, network segmentation can help limit exposure by restricting access to these specific API endpoints from untrusted networks or user groups until the vulnerability is fully remediated. Regular security audits and code reviews focusing on database interaction layers are recommended to prevent similar input validation failures in future development cycles.