CVE-2026-89310 in JTL WMS
Summary
by MITRE • 10/15/2026
A parameter taken from the request body is inserted into a T-SQL statement without parameterization or escaping, allowing a remote attacker to execute arbitrary SQL statements in the context of the application's database account.
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Analysis
by VulDB Data Team • 10/15/2026
The vulnerability described constitutes a classic instance of an Insecure Direct Object Reference combined with improper input validation, specifically manifesting as a Remote Code Execution via SQL Injection within a Microsoft SQL Server environment. This flaw arises when an application accepts user-supplied data from the HTTP request body and directly concatenates it into a Transact-SQL query string without employing parameterized queries or adequate sanitization mechanisms. By failing to distinguish between executable code and untrusted data, the database engine interprets maliciously crafted input as part of the SQL command structure rather than as literal values. This fundamental architectural weakness allows an attacker who can interact with the application's API or web interface to inject arbitrary T-SQL statements that are executed in the security context of the account associated with the database connection.
From a technical perspective, this vulnerability leverages the lack of input validation and parameterization, which are primary defenses against injection attacks. When parameters are not properly isolated from the query logic, an attacker can manipulate the syntax of the SQL statement to alter its intended behavior. For example, by injecting characters such as single quotes or semicolons followed by additional commands, the attacker can break out of the original string context and append new instructions to the database engine. This capability extends beyond simple data exfiltration; it enables full control over the underlying database system. The severity is significantly amplified because the execution occurs within the context of the application's database account, which often possesses elevated privileges necessary for normal application operation but may also include permissions for administrative tasks if not strictly least-privilege configured.
The operational impact of this vulnerability is severe and multifaceted. An attacker can read sensitive data stored in the database, including personally identifiable information, financial records, or proprietary business logic, leading to significant regulatory compliance violations such as GDPR or HIPAA breaches depending on the jurisdiction and data type. Furthermore, the ability to execute arbitrary SQL commands allows for the modification or destruction of critical data, compromising data integrity and availability. In more advanced scenarios, if the database account has access to extended stored procedures like xp_cmdshell in Microsoft SQL Server, an attacker can escalate privileges to achieve remote code execution on the underlying operating system. This effectively compromises not just the application but potentially the entire server infrastructure hosting the database service.
This vulnerability aligns with CWE-89 Improper Neutralization of Special Elements used in an SQL Command and is categorized under MITRE ATT&CK technique T1059 Command and Scripting Interpreter, specifically within the context of Database Commands. It also relates to CWE-20 Improper Input Validation as the root cause lies in the failure to validate or sanitize incoming request parameters before processing. To mitigate this risk, developers must implement parameterized queries or prepared statements for all database interactions involving user input. This ensures that data is treated strictly as values and never as executable code. Additionally, implementing strict input validation using allowlists can provide a secondary layer of defense by rejecting any input that does not conform to expected formats. Applying the principle of least privilege to the application's database account further limits the potential blast radius should an injection attempt succeed, restricting access only to necessary tables and operations while disabling dangerous extended stored procedures where they are not explicitly required for business logic.