CVE-2025-69990: News Portal Project Path Traversal Flaw

CVE-2025-69990 Overview

CVE-2025-69990 is an Arbitrary File Deletion vulnerability affecting phpgurukul News Portal Project V4.1. The vulnerability exists in the remove_file.php script, where the file parameter is improperly validated, allowing attackers to delete arbitrary files on the server. This type of vulnerability can lead to denial of service, data destruction, or serve as a stepping stone for further exploitation by removing security controls or configuration files.

Critical Impact

Attackers can delete critical system files, configuration files, or application data by manipulating the file parameter in remove_file.php, potentially leading to complete application compromise or denial of service.

Affected Products

• phpgurukul News Portal Project V4.1

Discovery Timeline

• January 13, 2026 - CVE-2025-69990 published to NVD
• January 13, 2026 - Last updated in NVD database

Technical Details for CVE-2025-69990

Vulnerability Analysis

This vulnerability is classified as an Arbitrary File Deletion flaw stemming from improper input validation in the remove_file.php script. The application fails to properly sanitize or validate the file parameter before using it in file deletion operations. Without proper path validation, an attacker can supply directory traversal sequences or absolute paths to target files outside the intended directory scope.

The impact of arbitrary file deletion vulnerabilities can be severe. Attackers may delete critical configuration files to disable security features, remove log files to cover their tracks, delete application data causing denial of service, or remove authentication-related files to bypass access controls. In some scenarios, deleting specific files can create conditions for further exploitation, such as removing .htaccess files to expose sensitive directories.

Root Cause

The root cause of this vulnerability is insufficient input validation in the remove_file.php script. The file parameter accepts user-supplied input and passes it directly to file system operations without:

• Validating that the file path is within an expected directory (path canonicalization)
• Sanitizing directory traversal sequences such as ../
• Implementing allowlist-based file validation
• Checking file ownership or permissions appropriately

This allows attackers to specify arbitrary file paths, potentially including system files, configuration files, or other critical application components.

Attack Vector

The attack can be executed remotely through HTTP requests to the vulnerable remove_file.php endpoint. An attacker constructs a malicious request with a crafted file parameter containing directory traversal sequences or absolute paths. The vulnerable script processes this input without proper validation and deletes the specified file if the web server process has sufficient permissions.

For example, an attacker might target configuration files like config.php, database connection files, or system files accessible to the web server user. The attack requires no authentication if the vulnerable script is publicly accessible, making it particularly dangerous in default configurations.

For detailed technical information about the vulnerability, see the GitHub File Deletion Vulnerability documentation.

Detection Methods for CVE-2025-69990

Indicators of Compromise

• HTTP requests to remove_file.php containing directory traversal patterns such as ../ or ..%2F
• Unexpected file deletions in application or system directories
• Web server logs showing suspicious requests to remove_file.php with encoded path characters
• Missing configuration files, log files, or application components

Detection Strategies

• Monitor web server access logs for requests to remove_file.php with suspicious parameters
• Implement file integrity monitoring on critical configuration and system files
• Deploy web application firewall (WAF) rules to detect and block path traversal attempts
• Enable logging for file system operations performed by the web server process

Monitoring Recommendations

• Configure real-time alerting for any access attempts to remove_file.php
• Implement file change detection on critical directories
• Monitor for HTTP 200 responses to remove_file.php combined with unusual parameter values
• Review backup systems to ensure deleted files can be recovered

How to Mitigate CVE-2025-69990

Immediate Actions Required

• Remove or disable the remove_file.php script if file deletion functionality is not required
• Implement strict access controls to restrict access to administrative scripts
• Apply input validation to the file parameter using allowlist-based validation
• Ensure the web server process runs with minimal file system permissions

Patch Information

At the time of publication, no official patch has been released for this vulnerability. Organizations using phpgurukul News Portal Project V4.1 should implement the workarounds described below and monitor for vendor updates. For additional details, refer to the GitHub vulnerability documentation.

Workarounds

• Remove the remove_file.php script entirely if file deletion functionality is not business-critical
• Implement authentication and authorization checks before allowing file operations
• Add path canonicalization and directory containment validation to ensure files can only be deleted from intended directories
• Use PHP's basename() function to strip directory components from user input
• Configure web server permissions to restrict the directories where files can be deleted

# Configuration example - restrict access to remove_file.php via .htaccess
# Add to your Apache .htaccess file in the application directory
<Files "remove_file.php">
    Order Deny,Allow
    Deny from all
    # Allow only from trusted admin IPs if needed
    # Allow from 192.168.1.100
</Files>