CVE-2026-105918 in Learning-Management-System
Summary
by MITRE • 10/06/2026
A vulnerability has been found in Kusalkasilva Learning-Management-System up to ffeb873f8803f1e9664384ff75000c7da45466d2. Impacted is the function mysql_error of the file login.php of the component Login Endpoint. The manipulation of the argument username/password leads to sql injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.
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Analysis
by VulDB Data Team • 10/06/2026
The Kusalkasilva Learning Management System contains a critical security flaw within its authentication mechanism that allows for remote SQL injection attacks. This vulnerability resides specifically in the login.php file, affecting the mysql_error function which handles user credentials during the login process. The root cause of this issue is insufficient input validation and sanitization of the username and password arguments provided by users attempting to authenticate. Because these inputs are directly concatenated into database queries without proper escaping or parameterized query usage, an attacker can inject malicious SQL code through the authentication fields. This flaw represents a classic instance of improper neutralization of special elements used in an SQL command, commonly categorized under CWE-89: Improper Neutralization of Special Elements used in an SQL Command.
The operational impact of this vulnerability is severe, as it enables remote attackers to bypass authentication controls entirely or extract sensitive data from the underlying database. By manipulating the username and password fields, an attacker can execute arbitrary SQL statements against the backend database server. This could lead to unauthorized access to user accounts, exposure of personally identifiable information such as email addresses and hashed passwords, modification of course records, or even complete compromise of the database integrity depending on the privileges assigned to the database account used by the application. The ability to initiate this attack remotely means that no prior authentication is required for exploitation, significantly lowering the barrier for entry for malicious actors. This aligns with ATT&CK technique T1059: Command and Scripting Interpreter if further commands are executed via stacked queries, or more directly with data exfiltration techniques associated with database access.
The risk profile of this vulnerability is exacerbated by the development practices employed by the project maintainers. The system utilizes a continuous delivery model with rolling releases, which means that updates are deployed frequently without distinct version numbers for affected and patched states. This lack of clear versioning complicates vulnerability management efforts for administrators who rely on version checks to determine patch applicability. Furthermore, despite early notification through an issue report, the project has not yet responded or provided a fix, leaving users exposed indefinitely unless they implement their own mitigations. The public disclosure of the exploit further increases the likelihood of automated scanning and exploitation by threat actors targeting unpatched instances globally.
To mitigate this risk in the absence of an official patch from the vendor, administrators should implement strict input validation at the application layer to reject any special characters or SQL syntax within login fields. Additionally, deploying a Web Application Firewall can help block known injection patterns before they reach the vulnerable function. Database-level controls such as restricting permissions for the database user used by the web application to only necessary operations and disabling error message display in production environments are also critical defensive measures. Disabling detailed MySQL error messages prevents attackers from using blind SQL injection techniques that rely on error-based feedback to refine their payloads. Long-term resolution requires migrating away from deprecated mysql_error functions and adopting modern, secure database interaction libraries that support prepared statements with parameterized queries to ensure all user inputs are treated strictly as data rather than executable code.