CVE-2025-4031: Pre-school Enrollment System SQLi Flaw

CVE-2025-4031 Overview

CVE-2025-4031 is a SQL injection vulnerability in PHPGurukul Pre-School Enrollment System 1.0. The flaw resides in /admin/aboutus.php, where the pagetitle parameter is concatenated into a SQL query without sanitization. Remote attackers can manipulate this parameter to inject arbitrary SQL statements against the backend database. The exploit details have been publicly disclosed, increasing the likelihood of opportunistic abuse against exposed installations. The vulnerability maps to CWE-89 (SQL Injection) and CWE-74 (Improper Neutralization of Special Elements in Output).

Critical Impact
Unauthenticated remote attackers can inject SQL through the pagetitle parameter in /admin/aboutus.php, exposing administrative data and enabling further compromise of the enrollment system.

Affected Products

PHPGurukul Pre-School Enrollment System 1.0
Component: /admin/aboutus.php
Vulnerable parameter: pagetitle

Discovery Timeline

2025-04-28 - CVE-2025-4031 published to NVD
2025-05-10 - Last updated in NVD database

Technical Details for CVE-2025-4031

Vulnerability Analysis

The vulnerability exists in the administrative aboutus.php script of PHPGurukul Pre-School Enrollment System 1.0. The script accepts the pagetitle argument from HTTP input and embeds it into a SQL statement without parameterization or escaping. An attacker can supply crafted SQL fragments through this parameter to alter query logic, read arbitrary database tables, or modify stored records.

The attack requires no authentication and no user interaction. It can be initiated remotely over the network against any reachable instance of the application. The EPSS probability is 0.211% with a percentile of 43.5, indicating a moderate likelihood of exploitation activity given that a public disclosure already exists.

Root Cause

The root cause is improper neutralization of special elements used in a SQL command (CWE-89). User-controlled input from the pagetitle parameter flows directly into a dynamic SQL query string. The application does not use prepared statements, parameter binding, or input validation routines, so quotes, comments, and statement separators reach the database engine unfiltered.

Attack Vector

An attacker sends an HTTP request to /admin/aboutus.php with a malicious value in the pagetitle parameter. By appending SQL operators such as UNION SELECT, OR 1=1, or stacked queries, the attacker can extract administrator credentials, dump enrollment records containing personal data of minors and guardians, or corrupt application data. Refer to the GitHub Issue Report and VulDB entry 306394 for technical disclosure details.

Detection Methods for CVE-2025-4031

Indicators of Compromise

HTTP requests to /admin/aboutus.php containing SQL metacharacters such as ', --, ;, or UNION in the pagetitle parameter.
Database error messages or unusually large response bodies returned by aboutus.php.
Unexpected administrative account creation or modification in the enrollment database.
Outbound connections from the web server immediately following suspicious requests to admin endpoints.

Detection Strategies

Deploy web application firewall rules that flag SQL injection patterns targeting the pagetitle parameter.
Enable verbose web server logging for the /admin/ directory and parse logs for parameter tampering.
Monitor MySQL or MariaDB logs for syntax errors and abnormal query patterns originating from the enrollment application.
Correlate authentication anomalies in the admin panel with preceding requests to aboutus.php.

Monitoring Recommendations

Alert on repeated 500-series HTTP responses from admin scripts, which often indicate injection probing.
Track query volume baselines against the enrollment database and trigger on sudden spikes from the web tier.
Review file integrity for PHP source files in the /admin/ directory to detect tampering post-exploitation.

How to Mitigate CVE-2025-4031

Immediate Actions Required

Restrict access to the /admin/ directory using IP allow-listing or VPN-only access until a patch is available.
Place the application behind a web application firewall with SQL injection signatures enabled.
Audit administrator accounts and reset credentials, assuming potential compromise of any internet-exposed instance.
Review database logs for indicators of prior exploitation against aboutus.php.

Patch Information

No official vendor patch has been published in the references. Monitor the PHP Gurukul Blog for updates. Until a fix is available, operators should consider taking the application offline or applying compensating controls. Source code remediation requires replacing dynamic SQL concatenation in aboutus.php with parameterized queries using mysqli_prepare() or PDO prepared statements.

Workarounds

Modify aboutus.php to validate that pagetitle contains only an expected character set, rejecting requests containing SQL metacharacters.
Apply database-level least privilege so the web application account cannot read sensitive tables or execute administrative SQL.
Disable the aboutus.php endpoint if the functionality is not required in production deployments.
Implement a reverse proxy rule that strips or blocks the pagetitle parameter when sourced from untrusted networks.

bash

# Example ModSecurity rule to block SQL metacharacters in pagetitle
SecRule ARGS:pagetitle "@rx (?i)(union|select|insert|update|delete|drop|--|;|')" \
    "id:1004031,phase:2,deny,status:403,log,\
    msg:'CVE-2025-4031 SQLi attempt against aboutus.php'"