CVE-2026-109626 in ERPNext
Summary
by MITRE • 10/13/2026
Frappe ERPNext before 16.34.2 contains an SQL injection vulnerability caused by missing input validation in multiple endpoints. Authenticated attackers with low privileges can send specially crafted requests to these endpoints to inject SQL 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 16.34.2, specifically manifesting as a critical SQL injection vulnerability across multiple application endpoints. This defect stems directly from insufficient input validation mechanisms during the processing of user-supplied data. In modern web applications, particularly those built on frameworks like Frappe that handle complex relational database interactions, it is imperative to sanitize and validate all incoming parameters before they are incorporated into dynamic query structures. The absence of robust sanitization routines allows malicious actors to manipulate these inputs, thereby altering the intended logic of SQL commands executed by the backend database engine. This type of vulnerability represents a classic failure in input handling where trusted application endpoints inadvertently become vectors for unauthorized data manipulation or extraction due to poor coding practices regarding parameter binding and escaping.
From an operational perspective, this vulnerability poses a severe risk because it can be exploited by authenticated attackers possessing only low-level privileges. Typically, SQL injection vulnerabilities require high-privilege access or unauthenticated entry points to yield significant impact; however, the ability for low-privileged users to execute arbitrary SQL commands drastically lowers the barrier to exploitation. Once an attacker successfully injects malicious payloads into these endpoints, they can bypass standard application logic and directly interact with the underlying database schema. This capability enables the extraction of sensitive information such as user credentials, financial records, customer personal data, or proprietary business intelligence stored within the ERP system's tables. The impact extends beyond mere data leakage, potentially allowing for further lateral movement if the database service account possesses elevated permissions on the host server or network infrastructure.
The technical classification of this flaw aligns with Common Weakness Enumeration identifier CWE-89, which defines Improper Neutralization of Special Elements used in an SQL Command. This category encompasses any software that constructs SQL commands using user-controlled input without proper validation or encoding. Furthermore, from a tactical standpoint relevant to threat intelligence frameworks such as MITRE ATT&CK, this vulnerability facilitates the Data Exfiltration technique under the Collection phase (T1005). Attackers leveraging this flaw would likely employ techniques associated with database query manipulation to retrieve specific data sets efficiently and stealthily. The exploitation path typically involves crafting HTTP requests that embed SQL syntax within standard form fields or URL parameters, relying on the application's failure to distinguish between legitimate input and malicious code structures.
To mitigate this vulnerability, organizations running Frappe ERPNext must immediately upgrade to version 16.34.2 or later, where these specific endpoints have been patched with proper input validation and parameterized query implementations. Parameterization ensures that user inputs are treated strictly as data rather than executable code, effectively neutralizing injection attempts regardless of their content. In addition to upgrading, administrators should enforce strict least-privilege principles for database accounts used by the application, ensuring that even if an injection occurs, the scope of potential damage is contained within minimal permissions. Implementing Web Application Firewalls with robust SQL injection detection rules can also provide a layer of defense-in-depth, although this should not replace direct code remediation and patch management as primary mitigation strategies.