CVE-2026-2821: Fujian Smart Platform SQLi Vulnerability

CVE-2026-2821 Overview

A SQL injection vulnerability has been identified in the Fujian Smart Integrated Management Platform System up to version 7.5. The vulnerability affects an unknown function within the file /Module/CRXT/Controller/XCamera.ashx. Through manipulation of the ChannelName argument, an attacker can inject malicious SQL commands. This vulnerability is remotely exploitable, and proof-of-concept exploit code has been made publicly available, increasing the risk of active exploitation.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to manipulate database queries, potentially leading to unauthorized data access, data modification, or complete database compromise without requiring authentication.

Affected Products

• Fujian Smart Integrated Management Platform System up to version 7.5
• /Module/CRXT/Controller/XCamera.ashx endpoint

Discovery Timeline

• 2026-02-20 - CVE-2026-2821 published to NVD
• 2026-02-20 - Last updated in NVD database

Technical Details for CVE-2026-2821

Vulnerability Analysis

This SQL injection vulnerability (classified as CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) exists in the Fujian Smart Integrated Management Platform System's camera module controller. The vulnerable endpoint /Module/CRXT/Controller/XCamera.ashx fails to properly sanitize user-supplied input in the ChannelName parameter before incorporating it into SQL queries.

The vulnerability allows unauthenticated remote attackers to inject arbitrary SQL statements through the network-accessible endpoint. When exploited, attackers can potentially extract sensitive information from the database, modify or delete data, bypass authentication mechanisms, or in some configurations, execute commands on the underlying operating system through database-specific features.

Root Cause

The root cause of this vulnerability is improper input validation and the lack of parameterized queries in the XCamera.ashx handler. The ChannelName argument is directly concatenated into SQL queries without proper sanitization or escaping of special characters, allowing attackers to break out of the intended query structure and inject malicious SQL commands.

Attack Vector

The attack can be executed remotely over the network without requiring any authentication or user interaction. An attacker can craft malicious HTTP requests to the vulnerable /Module/CRXT/Controller/XCamera.ashx endpoint, embedding SQL injection payloads within the ChannelName parameter. The injected SQL code is then executed with the privileges of the database user configured for the application.

The exploitation methodology involves sending specially crafted requests containing SQL metacharacters and commands. Due to the public availability of proof-of-concept code, attackers have a readily available blueprint for exploitation. Technical details and a PoC script are available in the GitHub PoC repository.

Detection Methods for CVE-2026-2821

Indicators of Compromise

• Unusual or malformed requests to /Module/CRXT/Controller/XCamera.ashx containing SQL syntax in the ChannelName parameter
• Database error messages in application logs indicating SQL syntax errors or injection attempts
• Unexpected database queries containing union selects, time delays, or other common injection patterns
• Anomalous database access patterns such as bulk data extraction or authentication table queries

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the XCamera.ashx endpoint
• Monitor HTTP request logs for suspicious characters in the ChannelName parameter including single quotes, double dashes, and SQL keywords
• Deploy database activity monitoring to identify unusual query patterns or unauthorized data access
• Utilize intrusion detection systems with signatures for SQL injection attack patterns

Monitoring Recommendations

• Enable detailed logging for the /Module/CRXT/Controller/XCamera.ashx endpoint and review logs regularly for injection attempts
• Configure alerting for database errors that may indicate failed or successful exploitation attempts
• Monitor for unusual outbound network connections from the database server that could indicate data exfiltration
• Implement baseline monitoring for database query patterns to detect anomalous activity

How to Mitigate CVE-2026-2821

Immediate Actions Required

• Restrict network access to the vulnerable /Module/CRXT/Controller/XCamera.ashx endpoint using firewall rules or network segmentation
• Implement a Web Application Firewall with SQL injection protection rules for the affected endpoint
• Review and restrict database user privileges to minimize potential damage from successful exploitation
• Consider temporarily disabling the vulnerable functionality if it is not business-critical

Patch Information

No vendor patch information is currently available in the CVE data. Organizations should monitor vendor communications and the VulDB entry for updates regarding official patches. Contact the vendor directly for remediation guidance and expected patch timelines.

Workarounds

• Deploy input validation at the application layer to sanitize the ChannelName parameter before processing
• Implement parameterized queries or prepared statements if source code modification is possible
• Use network-level access controls to limit which IP addresses can reach the vulnerable endpoint
• Apply the principle of least privilege to the database account used by the application

# Example: Restrict access to vulnerable endpoint via web server configuration
# For Apache - add to .htaccess or httpd.conf
<Location "/Module/CRXT/Controller/XCamera.ashx">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
</Location>

# For Nginx - add to server block
location /Module/CRXT/Controller/XCamera.ashx {
    allow 192.168.1.0/24;
    deny all;
}