CVE-2026-7238 Overview
A critical unrestricted file upload vulnerability has been identified in code-projects Online Music Site version 1.0. The vulnerability exists in the /Administrator/PHP/AdminUpdateAlbum.php file, where improper handling of the txtimage parameter allows attackers to upload arbitrary files without proper validation. This flaw enables remote exploitation, potentially allowing malicious actors to upload and execute malicious code on the affected server.
Critical Impact
Remote attackers with administrative privileges can upload arbitrary files to the server, potentially leading to remote code execution, data compromise, or complete system takeover.
Affected Products
- code-projects Online Music Site 1.0
- Systems running the vulnerable AdminUpdateAlbum.php component
Discovery Timeline
- 2026-04-28 - CVE-2026-7238 published to NVD
- 2026-04-29 - Last updated in NVD database
Technical Details for CVE-2026-7238
Vulnerability Analysis
The vulnerability resides in the administrative album update functionality of the Online Music Site application. The AdminUpdateAlbum.php script fails to properly validate and sanitize file uploads received through the txtimage parameter. This improper access control (CWE-284) allows authenticated administrators to upload files of any type, including potentially malicious scripts such as PHP web shells.
The attack requires network access and administrative privileges to exploit. Once exploited, an attacker could achieve limited confidentiality, integrity, and availability impact on the vulnerable system. The exploit technique has been disclosed publicly, increasing the risk of exploitation in the wild.
Root Cause
The root cause of this vulnerability is the absence of proper file type validation and sanitization in the AdminUpdateAlbum.php script. The application does not verify the file extension, MIME type, or content of uploaded files through the txtimage parameter. This lack of input validation represents a classic improper access control weakness, allowing unrestricted file uploads that bypass intended security restrictions.
Attack Vector
The attack is network-based and requires authenticated access with administrative privileges. An attacker would:
- Authenticate to the administrative panel of the Online Music Site application
- Navigate to the album update functionality
- Manipulate the txtimage parameter to upload a malicious file (e.g., a PHP web shell)
- Access the uploaded file through its web-accessible path to execute arbitrary commands
The vulnerability can be exploited through standard HTTP requests to the /Administrator/PHP/AdminUpdateAlbum.php endpoint. The malicious payload is delivered through the file upload mechanism, where the lack of validation allows the attacker to bypass any intended file type restrictions.
For technical details and proof of concept, refer to the GitHub CVE Issue Tracker and VulDB Vulnerability Entry.
Detection Methods for CVE-2026-7238
Indicators of Compromise
- Unexpected file types (especially .php, .phtml, .phar) appearing in album image upload directories
- Suspicious HTTP POST requests to /Administrator/PHP/AdminUpdateAlbum.php with unusual file extensions
- Web shells or executable scripts in directories intended for image storage
- Unusual outbound network connections originating from the web server
Detection Strategies
- Monitor web server access logs for POST requests to AdminUpdateAlbum.php containing non-image file extensions
- Implement file integrity monitoring on the web application directories to detect unauthorized file additions
- Deploy web application firewalls (WAF) with rules to detect and block malicious file upload attempts
- Review authentication logs for unusual administrative access patterns
Monitoring Recommendations
- Enable detailed logging for all file upload activities within the application
- Set up alerts for new file creation in upload directories with executable extensions
- Monitor for process execution from web-writable directories
- Implement real-time alerting for suspicious POST request patterns to administrative endpoints
How to Mitigate CVE-2026-7238
Immediate Actions Required
- Restrict access to the /Administrator/PHP/AdminUpdateAlbum.php endpoint to trusted IP addresses only
- Implement additional authentication controls for administrative functions
- Review and audit recent file uploads for any malicious content
- Consider temporarily disabling the album update functionality until a patch is applied
Patch Information
No official vendor patch has been released at this time. Organizations using code-projects Online Music Site 1.0 should contact the vendor through the Code Projects Resource for remediation guidance. Monitor the VulDB entry for updates on patch availability.
Workarounds
- Implement server-side file type validation that checks both file extensions and MIME types
- Configure the web server to prevent execution of scripts in upload directories (e.g., using .htaccess rules)
- Apply file upload whitelisting to allow only specific image formats (JPEG, PNG, GIF)
- Rename uploaded files with randomized names and store them outside the web root when possible
# Apache configuration to prevent script execution in upload directories
# Add to .htaccess in the upload directory
<FilesMatch "\.(php|phtml|php3|php4|php5|phps|phar)$">
Order Deny,Allow
Deny from all
</FilesMatch>
# Alternative: Disable script execution entirely
php_flag engine off
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
