The identified vulnerability, tracked as CVE-2026-26889, affects Sourcecodester Pharmacy Point of Sale System version 1.0. It is an SQL Injection vulnerability located in the /pharmacy/manage_category.php script. SQL Injection (CWE-89) occurs when untrusted input is improperly sanitized before being included in SQL queries, allowing attackers to manipulate the database queries executed by the application. In this case, the vulnerability requires an attacker to have high-level privileges (PR:H) and network access (AV:N), but no user interaction is needed (UI:N). The CVSS 3.1 base score is 2.7, indicating low severity, with a confidentiality impact limited to partial data disclosure (C:L), and no impact on integrity or availability (I:N/A:N). The vulnerability is exploitable remotely over the network without user interaction but requires authenticated access with elevated privileges, which limits the attack surface. No patches or known exploits are currently available, and the affected versions are not explicitly detailed beyond version 1.0. This vulnerability could allow an attacker with sufficient privileges to extract sensitive information from the backend database by injecting malicious SQL commands into the category management functionality of the POS system.

The potential impact of this vulnerability is limited due to the requirement for high privileges and the low confidentiality impact. An attacker who already has administrative access to the system could leverage this flaw to extract additional sensitive information from the database, potentially exposing customer or inventory data. However, since there is no impact on data integrity or system availability, the risk of data manipulation or service disruption is minimal. The lack of known exploits and patches reduces immediate risk but also means organizations must remain vigilant. For organizations using this POS system, especially in healthcare or pharmacy sectors, unauthorized data disclosure could lead to privacy concerns and regulatory compliance issues. The limited scope and exploitation requirements mean the threat is primarily internal or from compromised privileged accounts rather than external attackers without credentials.

Organizations should implement strict access controls to ensure only trusted administrators have high-level privileges to the POS system. Network segmentation and firewall rules should restrict access to the /pharmacy/manage_category.php endpoint to authorized personnel only. Regular monitoring and auditing of database queries and user activities can help detect suspicious behavior indicative of SQL Injection attempts. Although no patches are currently available, organizations should track vendor advisories for updates and apply patches promptly once released. Employing Web Application Firewalls (WAFs) with SQL Injection detection rules can provide an additional layer of defense. Developers should review and refactor the vulnerable code to use parameterized queries or prepared statements to eliminate SQL Injection risks. Finally, enforcing the principle of least privilege and multi-factor authentication for administrative accounts will reduce the likelihood of exploitation.