CVE-2026-3153 is a medium-severity SQL injection vulnerability identified in the itsourcecode Document Management System version 1.0. The flaw exists in the /register.php file, where the Username parameter is improperly sanitized, allowing an attacker to inject malicious SQL code remotely without requiring authentication or user interaction. This injection can manipulate backend SQL queries, potentially enabling unauthorized access to sensitive data, modification of database contents, or disruption of service. The vulnerability affects confidentiality, integrity, and availability to a limited extent, as indicated by the CVSS vector (VC:L, VI:L, VA:L). The attack complexity is low, and no privileges or user interaction are needed, making exploitation feasible for remote attackers. Although no known exploits are currently active in the wild, the public disclosure of the vulnerability details increases the risk of exploitation. The vulnerability is specific to version 1.0 of the product, and no patches or updates have been linked yet, emphasizing the need for immediate mitigation steps by users of this software.

The impact of CVE-2026-3153 on organizations using the itsourcecode Document Management System 1.0 can be significant. Successful exploitation could lead to unauthorized disclosure of sensitive documents or user data stored within the system, undermining confidentiality. Attackers may also alter or delete records, affecting data integrity and potentially disrupting business operations. Availability could be impacted if attackers execute SQL commands that degrade database performance or cause crashes. Given the remote and unauthenticated nature of the vulnerability, attackers can exploit it at scale, increasing the risk of widespread compromise in environments where this software is deployed. Organizations handling sensitive or regulated information are particularly at risk, as data breaches could lead to compliance violations, reputational damage, and financial losses.

To mitigate CVE-2026-3153, organizations should immediately implement input validation and sanitization on the Username parameter in /register.php to prevent SQL injection. Employing parameterized queries or prepared statements is critical to ensure that user input cannot alter SQL command structure. If a patch or updated version from itsourcecode becomes available, prioritize applying it promptly. In the absence of a patch, consider deploying web application firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting the vulnerable endpoint. Regularly monitor logs for suspicious activity related to /register.php and the Username parameter. Additionally, conduct security assessments and code reviews of the application to identify and remediate other potential injection points. Restrict database user privileges to the minimum necessary to limit the impact of any successful injection.