CVE-2026-39380
MediumCVSS 5.4Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
Stored XSS vulnerability in Open Source Point of Sale before version 3.4.3. Insufficient input sanitization in the stock_location parameter allows injection of malicious JavaScript that executes in the Employees interface.
Risk Assessment
An attacker can hijack employee sessions, steal data, or perform unauthorized actions in the POS system.
Recommendation
Update Open Source Point of Sale to version 3.4.3 or later.
Other vulnerabilities in Open Source Point of Sale
See all- CVE-2026-19895Low
In the Open Source Point of Sale (opensourcepos) up to version 3.4.2, a vulnerability was found in the Login::index function in app/Config/Filters.php. The issue is improper restriction of excessive authentication attempts, allowing brute-force attacks. The attack is remote but requires high complexity. The exploit has been published, and the project has not responded.
- CVE-2026-32712Medium
Open Source Point of Sale prior to version 3.4.3 has a stored XSS vulnerability in the Daily Sales management table. The customer_name column is rendered as raw HTML, allowing an attacker with customer management permissions to inject JavaScript via first_name or last_name fields.
Original NVD description (English source)
Open Source Point of Sale is a web based point-of-sale application written in PHP using CodeIgniter framework. Prior to 3.4.3, a Stored Cross-Site Scripting (XSS) vulnerability exists in the Stock Locations configuration feature. The application fails to properly sanitize user input supplied through the stock_location parameter, allowing attackers to inject malicious JavaScript code that is stored in the database and executed when rendered in the Employees interface. This vulnerability is fixed in 3.4.3.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS