CVE-2025-51970: Online Shopping System Advanced SQLi Flaw

CVE-2025-51970 Overview

CVE-2025-51970 is a SQL Injection vulnerability in PuneethReddyHC Online Shopping System Advanced 1.0. The flaw resides in the action.php endpoint, which fails to sanitize the keyword POST parameter before incorporating it into a SQL query. Attackers can inject arbitrary SQL syntax to read, modify, or delete backend database records. The issue is tracked under CWE-89: Improper Neutralization of Special Elements used in an SQL Command.

Critical Impact
Successful exploitation allows attackers to retrieve sensitive data and tamper with database contents on affected e-commerce deployments.

Affected Products

PuneethReddyHC Online Shopping System Advanced 1.0
Component: action.php endpoint
Vulnerable parameter: keyword (POST)

Discovery Timeline

2025-07-29 - CVE-2025-51970 published to NVD
2025-11-13 - Last updated in NVD database

Technical Details for CVE-2025-51970

Vulnerability Analysis

The vulnerability stems from improper input sanitization in the action.php endpoint of the Online Shopping System Advanced application. The keyword POST parameter is concatenated directly into a SQL query without parameterization or escaping. An attacker can submit crafted SQL syntax in this parameter to alter the query logic.

The vulnerability impacts confidentiality and integrity at a high level, while availability remains unaffected. Exploitation requires no authentication and no user interaction, but the attack vector is classified as local, meaning the attacker must reach the vulnerable endpoint through a constrained access path. Successful exploitation enables data extraction, authentication bypass through query manipulation, and unauthorized modification of records such as orders, users, and product entries.

Root Cause

The root cause is the absence of prepared statements or input validation when handling the keyword POST parameter. User-supplied strings are passed directly into a dynamically constructed SQL query, allowing injected operators such as UNION, OR, or comment sequences to change query behavior. This is a textbook [CWE-89] flaw rooted in unsafe string concatenation.

Attack Vector

An attacker sends a POST request to action.php with a malicious payload in the keyword field. Typical payloads use boolean-based, union-based, or time-based blind SQL injection techniques to extract database contents. Because no authentication is required, any actor able to reach the endpoint can issue the request. Refer to the vendor advisory writeup on GitHub and the GitHub Gist code snippet for technical details.

Detection Methods for CVE-2025-51970

Indicators of Compromise

POST requests to action.php containing SQL metacharacters such as ', ", --, UNION SELECT, or OR 1=1 in the keyword parameter.
Database error messages or unusually long response times tied to the action.php endpoint, indicating boolean or time-based blind injection.
Unexpected outbound queries from the database service or anomalous reads against users, orders, or credential tables.

Detection Strategies

Inspect web server access logs for action.php requests with encoded SQL syntax in the keyword parameter.
Deploy a Web Application Firewall (WAF) rule set targeting SQL injection signatures on the affected endpoint.
Enable database query logging and alert on queries containing unbalanced quotes, stacked statements, or UNION operators originating from the application user.

Monitoring Recommendations

Correlate web access logs with database logs to detect injection attempts that result in successful query execution.
Monitor for spikes in 500-series HTTP responses or abnormal payload sizes from action.php.
Track authentication anomalies that may follow data extraction, such as logins from new IP addresses using previously dormant accounts.

How to Mitigate CVE-2025-51970

Immediate Actions Required

Restrict network access to the Online Shopping System Advanced 1.0 instance until a fix is applied.
Place a WAF in front of the application with rules blocking SQL injection patterns on the keyword parameter.
Audit the database for unauthorized reads or modifications and rotate any credentials stored in the application database.

Patch Information

No official vendor patch is referenced in the NVD entry at the time of publication. Administrators should monitor the project repository and advisory for updates. Until a fix ships, organizations should treat the application as unsuitable for production exposure.

Workarounds

Modify action.php to use prepared statements with bound parameters for all database queries involving the keyword input.
Apply server-side input validation that rejects non-alphanumeric characters in search keywords where business logic permits.
Run the database service with a least-privilege account that cannot access tables outside the application's required scope.
Disable or remove the affected endpoint if the search functionality is not required.

bash

# Example WAF rule (ModSecurity) blocking SQLi in the keyword parameter
SecRule ARGS:keyword "@rx (?i)(union(\s|/\*.*\*/)+select|or\s+1=1|--|;|/\*|\bsleep\s*\(|\bbenchmark\s*\()" \
    "id:1005197,phase:2,deny,status:403,msg:'CVE-2025-51970 SQLi attempt on action.php'"