CVE-2026-31917: WP ERP SQLi Vulnerability

CVE-2026-31917 Overview

CVE-2026-31917 is an SQL Injection vulnerability affecting the WP ERP plugin for WordPress developed by weDevs. The vulnerability stems from improper neutralization of special elements used in SQL commands, allowing authenticated attackers to inject malicious SQL queries and potentially access sensitive data stored in the WordPress database.

Critical Impact

This SQL Injection vulnerability allows authenticated attackers to extract sensitive data from the database, potentially compromising employee records, financial information, and other business-critical data managed by the ERP system.

Affected Products

• WP ERP WordPress plugin versions through 1.16.10
• WordPress installations running vulnerable WP ERP versions
• weDevs WP ERP enterprise resource planning module

Discovery Timeline

• 2026-03-13 - CVE CVE-2026-31917 published to NVD
• 2026-03-16 - Last updated in NVD database

Technical Details for CVE-2026-31917

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) exists in the WP ERP plugin, which is a comprehensive enterprise resource planning solution for WordPress. The vulnerability allows attackers with authenticated access to manipulate SQL queries through improperly sanitized user input.

The attack can be executed over the network and requires low-level privileges to exploit. While the attack complexity is low and requires no user interaction, the scope is changed, meaning the vulnerable component impacts resources beyond its security scope. The primary impact is to confidentiality, with potential for high-level data exposure, while availability impact remains limited.

Root Cause

The root cause of this vulnerability is the failure to properly sanitize and parameterize user-supplied input before incorporating it into SQL queries. The WP ERP plugin does not adequately validate or escape special SQL characters in user input, allowing malicious SQL commands to be injected and executed against the underlying WordPress database.

Attack Vector

The vulnerability is exploitable over the network by authenticated users. An attacker with valid WordPress credentials and access to the WP ERP plugin functionality can craft malicious input containing SQL injection payloads. When processed by the vulnerable code path, these payloads are interpreted as SQL commands, enabling the attacker to:

• Extract sensitive employee and customer data
• Access financial records and payroll information
• Enumerate database structure and contents
• Potentially modify or delete data depending on database permissions

The exploitation mechanism involves submitting specially crafted input through the ERP interface that bypasses input validation and directly interacts with database queries. For detailed technical information, refer to the Patchstack WP ERP SQL Injection Advisory.

Detection Methods for CVE-2026-31917

Indicators of Compromise

• Unusual SQL error messages appearing in WordPress error logs or debug output
• Unexpected database queries containing SQL keywords like UNION, SELECT, or comment sequences (--, /**/)
• Suspicious HTTP requests to WP ERP endpoints containing encoded special characters
• Database query logs showing abnormal query patterns or unauthorized data access attempts

Detection Strategies

• Monitor web application firewall (WAF) logs for SQL injection patterns targeting WP ERP endpoints
• Implement database activity monitoring to detect unusual query patterns or bulk data extraction
• Review WordPress access logs for suspicious parameter values in requests to ERP-related URLs
• Deploy intrusion detection rules targeting common SQL injection signatures in HTTP traffic

Monitoring Recommendations

• Enable WordPress debug logging temporarily to capture suspicious error patterns during investigation
• Configure alerting on database queries that contain multiple statement separators or UNION clauses
• Monitor for sudden increases in database read operations, particularly against user and financial tables
• Establish baseline metrics for normal WP ERP database interaction patterns to identify anomalies

How to Mitigate CVE-2026-31917

Immediate Actions Required

• Update the WP ERP plugin to the latest patched version immediately
• Review database access logs for evidence of prior exploitation attempts
• Temporarily restrict access to WP ERP functionality to trusted administrators only
• Implement a web application firewall (WAF) with SQL injection protection rules

Patch Information

weDevs should release a security update addressing this SQL Injection vulnerability. Administrators should check for updates to the WP ERP plugin beyond version 1.16.10 and apply them immediately. For additional guidance, consult the Patchstack WP ERP SQL Injection Advisory.

Workarounds

• Deploy a WAF rule to block requests containing SQL injection patterns targeting WP ERP endpoints
• Restrict WP ERP plugin access to only essential personnel until the patch is applied
• Consider temporarily disabling non-critical WP ERP features that accept user input
• Implement database-level restrictions to limit the WordPress database user's privileges

# Example: Add ModSecurity rules to block SQL injection attempts
# Add to .htaccess or Apache configuration
SecRule ARGS "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection attempt detected on WP ERP',\
    tag:'WP-ERP-Protection'"