CVE-2026-1059: FeMiner WMS SQL Injection Vulnerability

CVE-2026-1059 Overview

A SQL injection vulnerability has been identified in FeMiner WMS (Warehouse Management System) affecting versions up to commit 9cad1f1b179a98b9547fd003c23b07c7594775fa. The vulnerability exists in the /src/chkuser.php file, where improper handling of the Username parameter allows attackers to inject malicious SQL statements. This flaw enables remote attackers to manipulate database queries, potentially leading to unauthorized data access, data modification, or complete database compromise.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability without authentication to extract sensitive data, modify database contents, or potentially escalate to remote code execution depending on database configuration.

Affected Products

• FeMiner WMS up to commit 9cad1f1b179a98b9547fd003c23b07c7594775fa
• FeMiner WMS installations using rolling release deployment model

Discovery Timeline

• 2026-01-17 - CVE-2026-1059 published to NVD
• 2026-01-21 - Last updated in NVD database

Technical Details for CVE-2026-1059

Vulnerability Analysis

This SQL injection vulnerability stems from insufficient input validation in the user authentication component of FeMiner WMS. The /src/chkuser.php endpoint processes the Username parameter without adequate sanitization, allowing attackers to break out of the intended SQL query context and execute arbitrary SQL commands against the backend database.

The vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), which encompasses injection flaws where user-controlled input is not properly sanitized before being used in downstream processing. In this case, user-supplied data in the Username field is directly concatenated or interpolated into SQL queries without proper escaping or parameterization.

The network-accessible nature of this vulnerability means that any attacker with network connectivity to the vulnerable application can attempt exploitation. No authentication is required to reach the vulnerable endpoint, significantly lowering the barrier to exploitation.

Root Cause

The root cause of this vulnerability lies in the improper handling of user input within the chkuser.php authentication script. Instead of using parameterized queries or prepared statements, the application appears to construct SQL queries by directly incorporating user-supplied values into the query string. This classic anti-pattern allows special SQL characters in the input to be interpreted as query syntax rather than literal data values.

Attack Vector

The attack vector for CVE-2026-1059 is network-based, requiring no user interaction or prior authentication. An attacker can craft malicious HTTP requests to the /src/chkuser.php endpoint with specially crafted Username parameter values containing SQL syntax. The injected SQL is executed with the privileges of the database user configured for the application.

The vulnerability exploits the authentication mechanism, which is typically one of the most critical components of any application. Successful exploitation could allow an attacker to bypass authentication entirely, extract user credentials, access sensitive warehouse management data, or potentially pivot to further attacks depending on the database configuration and application architecture.

Detection Methods for CVE-2026-1059

Indicators of Compromise

• Unusual or malformed requests to /src/chkuser.php containing SQL keywords or special characters in the Username parameter
• Database error messages appearing in application logs or HTTP responses indicating SQL syntax errors
• Unexpected database query patterns or execution times suggesting injection attempts
• Authentication bypass events or anomalous successful logins without valid credentials

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the Username parameter
• Implement application-level logging that captures full request parameters for authentication endpoints
• Monitor database query logs for unusual patterns including UNION SELECT statements, time-based delays, or error-based extraction attempts
• Use intrusion detection systems with SQL injection signature sets focused on authentication bypass techniques

Monitoring Recommendations

• Enable detailed logging for all requests to /src/chkuser.php and similar authentication endpoints
• Configure database activity monitoring to alert on queries containing SQL injection indicators
• Set up real-time alerting for authentication anomalies such as multiple failed attempts followed by successful login
• Monitor for data exfiltration patterns that may indicate successful exploitation and data theft

How to Mitigate CVE-2026-1059

Immediate Actions Required

• Restrict network access to the FeMiner WMS application to trusted IP ranges if possible
• Deploy a Web Application Firewall with SQL injection protection in front of the vulnerable endpoint
• Review database user permissions and apply principle of least privilege to limit potential impact
• Enable enhanced logging and monitoring for the authentication endpoint to detect exploitation attempts

Patch Information

FeMiner WMS follows a rolling release strategy, meaning traditional versioned patches are not provided. The vendor was contacted about this vulnerability but did not respond. Organizations using this software should monitor the GitHub repository for any updates addressing this issue. Until an official fix is available, implement the workarounds and compensating controls described below. Additional technical details are available at VulDB #341628.

Workarounds

• Implement a Web Application Firewall rule to filter SQL injection patterns in the Username parameter before requests reach the application
• If source code access is available, modify /src/chkuser.php to use prepared statements or parameterized queries for all database interactions
• Deploy an application proxy that validates and sanitizes input parameters before forwarding to the vulnerable application
• Consider implementing additional authentication layers such as IP whitelisting or multi-factor authentication to reduce attack surface

# Example WAF rule for ModSecurity to block SQL injection in Username parameter
SecRule ARGS:Username "@detectSQLi" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection attempt detected in Username parameter - CVE-2026-1059',\
    tag:'attack-sqli'"