CVE-2026-8803
LowCVSS 3.7Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
In opensourcepos Open Source Point of Sale up to 3.4.2, the Login function in app/Models/Employee.php (Employee Login component) uses a weak hash. Remote exploitation is possible but of high complexity; the vendor states the code remains for the upgrade path and passwords are migrated to a newer hash after login.
Risk Assessment
Weak password hashing can ease password cracking if the database leaks, though the actual existence of this vulnerability is currently in question.
Recommendation
Update Open Source Point of Sale to the latest version and ensure all accounts have passwords migrated to the newer hashing mechanism.
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.
- CVE-2026-39380Medium
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.
- CVE-2025-68147High
In Open Source Point of Sale (opensourcepos) versions 3.4.0 through 3.4.1, there is a stored XSS vulnerability in the "Return Policy" configuration field. The application does not properly sanitize user input before saving it to the database or displaying it on receipts, allowing an attacker with access to store configuration to inject malicious JavaScript.
- CVE-2025-66924Medium
A Cross-site scripting (XSS) vulnerability in Create/Update Item Kit(s) in Open Source Point of Sale v3.4.1 allows remote attackers to inject arbitrary web script or HTML via the "name" parameter.
- CVE-2025-66923High
A Cross-site scripting (XSS) vulnerability in Create/Update Customer(s) in Open Source Point of Sale v3.4.1 allows remote attackers to inject arbitrary web script or HTML via the phone_number parameter.
- CVE-2025-66921High
A Cross-site scripting (XSS) vulnerability in Create/Update Item(s) Module in Open Source Point of Sale v3.4.1 allows remote attackers to inject arbitrary web script or HTML via the "name" parameter.
Original NVD description (English source)
A flaw has been found in opensourcepos Open Source Point of Sale up to 3.4.2. Impacted is the function Login of the file app/Models/Employee.php of the component Employee Login. This manipulation causes use of weak hash. Remote exploitation of the attack is possible. The attack is considered to have high complexity. The exploitability is considered difficult. The actual existence of this vulnerability is currently in question. The vendor explains: "[T]he code is still there to allow the upgrade path to work. The default password is initially seeded with the old hash function, but then migrated to a newer one after login. [T]he hash version check might be cleaned up in the future. Currently it's not actively in use as any password change will use a newer hash function."
Vulnerability data from NVD (NIST) · CISA KEV · EPSS