CVE-2025-5658: Phpgurukul Complaint System SQLi Flaw

CVE-2025-5658 Overview

CVE-2025-5658 is a SQL injection vulnerability in PHPGurukul Complaint Management System 2.0. The flaw resides in the /admin/updatecomplaint.php script, where the Status parameter is passed to a database query without proper sanitization. An authenticated remote attacker with administrative access can manipulate the parameter to inject arbitrary SQL statements. The exploit details have been publicly disclosed, increasing the risk of opportunistic attacks against exposed installations. The weakness is tracked under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Authenticated remote attackers can inject SQL statements through the Status parameter of /admin/updatecomplaint.php, potentially exposing or modifying complaint database records.

Affected Products

PHPGurukul Complaint Management System 2.0
Component: /admin/updatecomplaint.php
Vulnerable parameter: Status

Discovery Timeline

2025-06-05 - CVE-2025-5658 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-5658

Vulnerability Analysis

The vulnerability exists in the administrative complaint update workflow of PHPGurukul Complaint Management System 2.0. The updatecomplaint.php script accepts a Status argument from an HTTP request and concatenates it into an SQL query without parameterization or input validation. Because the value flows directly into the database layer, an attacker can break out of the intended query context and append arbitrary SQL syntax. Public disclosure of the issue on VulDB (entry #311148) and the associated GitHub tracker means proof-of-concept details are widely available. According to EPSS data, the vulnerability currently has a low predicted exploitation probability but remains reachable across the network.

Root Cause

The root cause is missing input sanitization and the absence of prepared statements in the update handler. The Status value received from the client is trusted and embedded verbatim into the SQL string executed against the backend MySQL database. This pattern is a classic instance of [CWE-74] input neutralization failures.

Attack Vector

Exploitation requires network access to the admin panel and valid low-privilege administrative credentials. Once authenticated, an attacker submits a crafted request to /admin/updatecomplaint.php where the Status parameter contains SQL metacharacters. Successful injection can be used to read arbitrary rows, modify complaint records, or probe the database schema.

No verified proof-of-concept code is available beyond the public disclosure references. See the GitHub issue for myCVE and VulDB entry #311148 for technical write-ups.

Detection Methods for CVE-2025-5658

Indicators of Compromise

HTTP POST or GET requests to /admin/updatecomplaint.php where the Status parameter contains SQL metacharacters such as single quotes, UNION, SELECT, --, or ;.
Web server access logs showing repeated administrative requests with abnormally long or encoded Status values.
Unexpected changes to complaint status records or unauthorized additions of administrator accounts.

Detection Strategies

Deploy Web Application Firewall (WAF) rules that inspect the Status parameter for common SQL injection payload patterns.
Enable MySQL general query logging and alert on queries originating from updatecomplaint.php that contain tautologies or stacked statements.
Correlate authentication events with subsequent administrative writes to identify anomalous session behavior.

Monitoring Recommendations

Monitor administrative endpoints for high request volumes from a single source IP within short time windows.
Track database error rates and syntax errors, which often accompany injection probing.
Alert on any HTTP 500 responses tied to updatecomplaint.php requests.

How to Mitigate CVE-2025-5658

Immediate Actions Required

Restrict network access to the /admin/ directory using IP allow-lists or VPN-only exposure.
Rotate all administrative credentials and enforce strong password policies.
Review recent database records for unauthorized modifications to complaint status values.
Enable WAF signatures targeting SQL injection patterns on the Status parameter.

Patch Information

No official patch has been published by the vendor at the time of the NVD entry. Consult the PHP Gurukul Security Blog for vendor updates. Until a fixed release is available, apply the workarounds below and consider migrating away from the affected version in production environments.

Workarounds

Modify updatecomplaint.php to use parameterized queries (PDO prepared statements or mysqli_prepare) instead of string concatenation.
Server-side validate the Status parameter against an allow-list of expected values before use in any SQL statement.
Apply the principle of least privilege to the database account used by the application, removing DDL and cross-database permissions.

bash

# Example: enforce allow-list validation in PHP before database use
# $allowed = ['Pending', 'In Progress', 'Closed'];
# if (!in_array($_POST['Status'], $allowed, true)) { http_response_code(400); exit; }
# $stmt = $pdo->prepare('UPDATE complaints SET status = ? WHERE id = ?');
# $stmt->execute([$_POST['Status'], (int)$_POST['id']]);