CVE-2025-70093: Open Source Point Of Sale RCE Vulnerability

CVE-2025-70093 Overview

A command injection vulnerability has been identified in OpenSourcePOS version 3.4.1, a popular open-source point-of-sale application used by retail businesses. The vulnerability allows attackers to execute arbitrary code on affected systems by returning a crafted AJAX response. This flaw in the application's AJAX handling mechanism creates a significant security risk for organizations relying on OpenSourcePOS for their retail operations.

Critical Impact

Attackers can achieve arbitrary code execution on affected OpenSourcePOS installations, potentially leading to complete system compromise, data theft, and unauthorized access to sensitive point-of-sale transaction data.

Affected Products

• OpenSourcePOS Open Source Point of Sale v3.4.1

Discovery Timeline

• 2026-02-13 - CVE-2025-70093 published to NVD
• 2026-02-17 - Last updated in NVD database

Technical Details for CVE-2025-70093

Vulnerability Analysis

This vulnerability is classified as CWE-77 (Command Injection), where the application fails to properly neutralize special elements used in a command. The flaw exists in how OpenSourcePOS processes AJAX responses, allowing malicious actors to inject and execute arbitrary system commands through specially crafted response data.

The vulnerability requires network access to exploit but does not require user interaction or authentication, making it exploitable in scenarios where an attacker can intercept or manipulate AJAX communication between the client and server. Successful exploitation can result in complete compromise of confidentiality and integrity of the affected system.

Root Cause

The root cause of this vulnerability lies in insufficient input validation and sanitization of AJAX response data within OpenSourcePOS v3.4.1. When the application processes AJAX responses, it fails to properly escape or validate command-related characters, allowing attackers to inject malicious commands that are subsequently executed by the underlying system.

Attack Vector

The attack vector is network-based, requiring the attacker to be able to inject or manipulate AJAX responses between the OpenSourcePOS application and its clients. This could be achieved through various means including man-in-the-middle attacks, compromised network infrastructure, or exploitation of other vulnerabilities that allow response manipulation.

The attacker crafts a malicious AJAX response containing command injection payloads. When the vulnerable application processes this response, the embedded commands are executed with the privileges of the application, potentially allowing full system compromise. See the GitHub CVE Research Document for additional technical details.

Detection Methods for CVE-2025-70093

Indicators of Compromise

• Unusual AJAX requests or responses containing shell metacharacters or command strings
• Unexpected process execution originating from the web server or OpenSourcePOS application processes
• Anomalous network traffic patterns associated with command and control activity
• Unauthorized file system modifications or creation of suspicious files in web application directories

Detection Strategies

• Monitor web application logs for malformed or suspicious AJAX request/response patterns
• Implement network intrusion detection rules to identify command injection payloads in HTTP traffic
• Deploy endpoint detection solutions to monitor for unusual process spawning from web application contexts
• Configure web application firewalls (WAF) to detect and block command injection attempts

Monitoring Recommendations

• Enable detailed logging for all AJAX endpoints in OpenSourcePOS
• Implement real-time alerting for any command execution attempts originating from web server processes
• Review web server access logs regularly for suspicious patterns or unauthorized access attempts
• Monitor system process trees for anomalous child processes spawned by the web application

How to Mitigate CVE-2025-70093

Immediate Actions Required

• Review the GitHub Pull Request for available patches and update guidance
• Restrict network access to OpenSourcePOS installations to trusted networks only
• Implement network segmentation to isolate point-of-sale systems from general network traffic
• Enable enhanced logging and monitoring on affected systems until patches can be applied

Patch Information

OpenSourcePOS maintainers have addressed this vulnerability. Organizations should review the associated pull request for patch details and upgrade instructions. It is recommended to update to the latest version of OpenSourcePOS that includes the security fix for this command injection vulnerability.

Workarounds

• Deploy a web application firewall (WAF) configured to detect and block command injection patterns
• Implement strict input validation at the network perimeter for all traffic to OpenSourcePOS
• Use network-level access controls to limit who can communicate with the OpenSourcePOS application
• Consider running OpenSourcePOS in an isolated container or virtual environment to limit blast radius of potential exploitation

# Example: Restrict network access to OpenSourcePOS using iptables
# Only allow connections from trusted management network
iptables -A INPUT -p tcp --dport 80 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP