CVE-2026-0565: Content Management System 1.0 SQLi Flaw

CVE-2026-0565 Overview

A SQL injection vulnerability has been identified in code-projects Content Management System version 1.0. This issue affects the processing of the file /admin/delete.php, where manipulation of the del argument can lead to SQL injection. The attack can be executed remotely over the network, and exploit information has been made publicly available, increasing the risk of active exploitation attempts.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to potentially extract, modify, or delete database contents, bypass authentication mechanisms, and compromise the integrity of the entire Content Management System.

Affected Products

• code-projects Content Management System 1.0

Discovery Timeline

• 2026-01-02 - CVE CVE-2026-0565 published to NVD
• 2026-01-05 - Last updated in NVD database

Technical Details for CVE-2026-0565

Vulnerability Analysis

This SQL injection vulnerability (classified as CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) exists within the /admin/delete.php file of the Content Management System. The vulnerability arises from insufficient input validation and sanitization of the del parameter before it is incorporated into SQL queries. When user-controlled input is passed directly to database queries without proper escaping or parameterization, attackers can inject malicious SQL statements that are executed by the database engine.

The network-based attack vector means that remote adversaries without authentication can potentially exploit this vulnerability, though the impact is assessed as affecting confidentiality, integrity, and availability to a limited degree. The public availability of exploit information significantly increases the likelihood of exploitation attempts against unpatched systems.

Root Cause

The root cause of this vulnerability is improper input validation in the /admin/delete.php script. The del parameter is directly interpolated into SQL queries without adequate sanitization, prepared statements, or parameterized queries. This failure to properly neutralize special characters in user input allows attackers to break out of the intended query context and execute arbitrary SQL commands.

Attack Vector

This vulnerability is exploitable remotely over the network. An attacker can craft malicious HTTP requests targeting the /admin/delete.php endpoint with specially crafted values in the del parameter. By injecting SQL syntax such as single quotes, UNION statements, or boolean-based payloads, the attacker can manipulate the underlying database queries to:

• Extract sensitive data from the database
• Bypass authentication and authorization controls
• Modify or delete database records
• Potentially achieve command execution on the underlying server in certain database configurations

The vulnerability mechanism involves passing a malicious payload through the del parameter that alters the SQL query structure. For detailed technical analysis, refer to the GitHub CVE Issue Discussion and VulDB #339377.

Detection Methods for CVE-2026-0565

Indicators of Compromise

• Unusual HTTP requests to /admin/delete.php containing SQL syntax characters such as single quotes ('), double dashes (--), semicolons (;), or UNION keywords in the del parameter
• Database error messages appearing in web server logs or application responses indicating SQL syntax errors
• Unexpected database queries in database server logs, particularly those involving data extraction or privilege escalation

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in requests to /admin/delete.php
• Monitor application and web server access logs for requests containing suspicious SQL keywords or encoding attempts in query parameters
• Deploy database activity monitoring to detect unusual query patterns, unauthorized data access, or privilege escalation attempts

Monitoring Recommendations

• Enable detailed logging for all requests to administrative endpoints including /admin/delete.php
• Configure alerting for database errors that may indicate SQL injection attempts, such as syntax errors or failed queries
• Review authentication logs for signs of credential extraction or authentication bypass attempts

How to Mitigate CVE-2026-0565

Immediate Actions Required

• Restrict network access to the /admin/delete.php endpoint using firewall rules or IP whitelisting until a patch is available
• Implement Web Application Firewall rules to filter SQL injection attempts targeting the vulnerable parameter
• Review and audit the Content Management System for any signs of compromise or unauthorized database access

Patch Information

At the time of this advisory, no official vendor patch has been identified for code-projects Content Management System 1.0. Organizations using this software should monitor the Code Projects Security Resources for security updates. If the application is critical, consider implementing the workarounds below or migrating to a supported and actively maintained CMS solution.

Workarounds

• Implement input validation and parameterized queries in the /admin/delete.php file by modifying the source code to use prepared statements
• Deploy a Web Application Firewall (WAF) configured to block SQL injection attack patterns
• Restrict access to administrative endpoints through IP-based access controls or VPN requirements
• Consider disabling or removing the vulnerable functionality if the delete feature is not essential

# Example: Block access to vulnerable endpoint via Apache .htaccess
<Files "delete.php">
    Order deny,allow
    Deny from all
    Allow from 192.168.1.0/24
</Files>