CVE-2026-3292: Jizhicms SQL Injection Vulnerability

CVE-2026-3292 Overview

A SQL Injection vulnerability has been identified in jizhiCMS up to version 2.5.6. The vulnerability exists in the findAll function within the library frphp/lib/Model.php of the Batch Interface component. Improper handling of the data argument allows attackers to inject malicious SQL queries, potentially compromising database integrity and confidentiality.

Critical Impact

Remote attackers with low privileges can exploit this SQL injection vulnerability to manipulate database queries, potentially accessing, modifying, or deleting sensitive data stored in the affected jizhiCMS installations.

Affected Products

• jizhiCMS versions up to and including 2.5.6
• Applications using the frphp/lib/Model.php library component
• Systems exposing the Batch Interface to network access

Discovery Timeline

• 2026-02-27 - CVE-2026-3292 published to NVD
• 2026-02-27 - Last updated in NVD database

Technical Details for CVE-2026-3292

Vulnerability Analysis

This SQL Injection vulnerability stems from insufficient input validation in the findAll function within jizhiCMS's Model library. The function accepts user-supplied data through the data argument without proper sanitization or parameterized query handling. When this data is incorporated into SQL queries, attackers can inject arbitrary SQL commands that execute with the database privileges of the application.

The exploit has been publicly disclosed, and proof-of-concept code has been made available. The vendor was contacted during responsible disclosure but did not respond, leaving users without an official patch.

Root Cause

The root cause is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The findAll function in frphp/lib/Model.php fails to properly sanitize or escape special characters in the data parameter before constructing SQL queries. This allows attackers to break out of the intended query context and inject malicious SQL statements.

Attack Vector

The attack can be carried out remotely over the network by authenticated users with low privileges. Attackers target the Batch Interface component by sending specially crafted requests containing malicious SQL payloads in the data parameter. The vulnerability requires no user interaction and can be exploited directly against the exposed interface.

The vulnerability mechanism involves injecting SQL commands through the data argument of the findAll function. When the application processes this input without proper parameterization or escaping, the injected SQL becomes part of the executed query. Attackers can leverage techniques such as UNION-based injection, blind SQL injection, or time-based attacks to extract data or manipulate database contents. For detailed technical analysis and proof-of-concept code, see the GitHub Gist Exploit Code.

Detection Methods for CVE-2026-3292

Indicators of Compromise

• Unusual database queries containing SQL keywords such as UNION, SELECT, DROP, or -- in application logs
• Unexpected data access patterns or bulk data retrieval from the database
• Error messages in logs indicating SQL syntax errors from the Batch Interface
• Requests to the Batch Interface containing encoded or suspicious characters in the data parameter

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection patterns in requests to the Batch Interface
• Monitor application logs for SQL error messages or anomalous query patterns
• Deploy database activity monitoring to identify unauthorized data access or modification
• Use intrusion detection systems with signatures for SQL injection attack patterns

Monitoring Recommendations

• Enable verbose logging for the jizhiCMS application, particularly for the Batch Interface component
• Set up alerts for multiple failed database queries or SQL syntax errors from the same source
• Monitor outbound network traffic for large data exfiltration attempts
• Review database audit logs for unauthorized access to sensitive tables

How to Mitigate CVE-2026-3292

Immediate Actions Required

• Restrict network access to the Batch Interface to trusted IP addresses only
• Implement input validation and parameterized queries at the application level
• Deploy a Web Application Firewall with SQL injection protection rules
• Consider disabling the Batch Interface if not required for business operations
• Audit database permissions to ensure least-privilege access

Patch Information

No official patch is currently available from the vendor. According to the CVE disclosure, the vendor was contacted early about this vulnerability but did not respond. Users should monitor the VulDB entry and jizhiCMS official channels for any future security updates.

Workarounds

• Apply input sanitization to the data parameter in frphp/lib/Model.php by escaping special SQL characters
• Implement prepared statements with parameterized queries in the findAll function
• Use application-level firewall rules to block requests containing SQL injection payloads
• Restrict access to the Batch Interface through network segmentation or authentication controls

# Example: Restrict access to Batch Interface in Apache
<Location "/batch">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    Allow from 10.0.0.0/8
</Location>