CVE-2026-51346 in StudIP
Summary
by MITRE • 08/17/2026
SQL Injection vulnerability in StudIP 6.0.x before 6.0.3 and 5.4.x before 5.4.12 allows a remote attacker to execute arbitrary code and obtain sensitive information via the store() functions.
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Analysis
by VulDB Data Team • 08/17/2026
The identified security flaw resides within the core functionality of StudIP, specifically affecting version ranges 6.0.x prior to patch level 3 and 5.4.x prior to patch level 12. This vulnerability is classified as a SQL Injection issue, which represents one of the most critical web application security risks according to industry standards such as CWE-89: Improper Neutralization of Special Elements used in an SQL Command. The root cause lies in the improper handling of user-supplied input within specific store() functions. These functions are designed to persist data into a database, but they fail to adequately sanitize or parameterize the incoming values before constructing and executing dynamic SQL queries. This lack of proper validation allows malicious actors to inject arbitrary Structured Query Language code directly into the application's backend logic.
From an operational perspective, this vulnerability enables remote attackers who have access to the affected endpoints to interact with the underlying database without authentication in many configurations or by exploiting existing session tokens if available. The primary consequence is the ability to execute arbitrary SQL commands against the database server. This capability extends beyond simple data exfiltration; it can lead to unauthorized modification of application logic, deletion of critical records, and potentially full system compromise depending on the privileges granted to the database user account running under the web application context. Attackers can leverage this flaw to bypass authentication mechanisms, retrieve sensitive personal information such as student grades, contact details, or administrative credentials, and manipulate course data or enrollment statuses for malicious purposes.
The technical mechanism involves manipulating input fields that are passed through the store() functions. By injecting specially crafted payloads containing SQL metacharacters like single quotes, semicolons, and comment markers, an attacker can alter the intended structure of the SQL query. For instance, a payload might close the original string literal, append a new SELECT statement to dump database contents, or use UNION-based techniques to extract data from other tables within the same schema. In more severe scenarios involving stacked queries, if the underlying Database Management System supports multiple statements separated by semicolons, an attacker could potentially execute administrative commands that interact with the operating system, leading to Remote Code Execution (RCE). This aligns with MITRE ATT&CK techniques such as T1059 Command and Scripting Interpreter for RCE scenarios or T1005 Data from Local System for information gathering.
Mitigation strategies must prioritize immediate patching of all affected instances to version 6.0.3 or later, or 5.4.12 and later, where these specific store() functions have been hardened with prepared statements or rigorous input validation frameworks. In the interim before patches can be applied, administrators should implement Web Application Firewall rules that detect common SQL injection patterns in POST requests targeting StudIP endpoints. Additionally, enforcing strict least-privilege principles for database accounts used by the application is crucial to limit the blast radius of any successful exploitation attempt. Regular security audits and code reviews focusing on data persistence layers are recommended to prevent similar vulnerabilities from being introduced during future development cycles.