CVE-2025-6311: Sales And Inventory System SQLi Flaw

CVE-2025-6311 Overview

CVE-2025-6311 is a SQL injection vulnerability in Campcodes Sales and Inventory System 1.0. The flaw resides in the /pages/account_add.php script, where the id and amount parameters are passed to the backend database without proper sanitization. Remote attackers can manipulate these arguments to inject arbitrary SQL statements. The exploit details have been publicly disclosed, increasing the likelihood of opportunistic attacks against exposed instances. The vulnerability is tracked under CWE-89 (SQL Injection) and CWE-74 (Improper Neutralization of Special Elements in Output).

Critical Impact
Unauthenticated remote attackers can inject SQL queries through the id and amount parameters of account_add.php, exposing database confidentiality, integrity, and availability.

Affected Products

Campcodes Sales and Inventory System 1.0
Vulnerable file: /pages/account_add.php
Vulnerable parameters: id, amount

Discovery Timeline

2025-06-20 - CVE-2025-6311 published to NVD
2026-04-29 - Last updated in NVD database

Technical Details for CVE-2025-6311

Vulnerability Analysis

The vulnerability stems from unsanitized handling of user-controlled input in the account_add.php endpoint of Campcodes Sales and Inventory System 1.0. The id and amount request parameters are concatenated directly into SQL statements executed against the backend database. Attackers can append SQL syntax to these parameters to alter query logic. No authentication is required to reach the vulnerable endpoint, and exploitation can be performed remotely over the network. Public disclosure of the exploit details on GitHub and VulDB raises the probability of automated scanning and exploitation.

Root Cause

The root cause is improper neutralization of special characters in SQL commands, classified as [CWE-89]. The application does not use parameterized queries or prepared statements for the id and amount arguments. Input validation routines are either absent or insufficient to neutralize SQL metacharacters such as single quotes, semicolons, and comment sequences.

Attack Vector

An attacker sends a crafted HTTP request to /pages/account_add.php with malicious payloads in the id or amount parameter. The injected SQL executes within the database session used by the application. Depending on database privileges, an attacker can read or modify records, dump credentials, or attempt secondary code execution through database-specific functionality. The attack requires no privileges and no user interaction.

No verified proof-of-concept code is published in trusted advisory sources. Refer to the GitHub Issue Discussion and the VulDB entry #313311 for additional technical context.

Detection Methods for CVE-2025-6311

Indicators of Compromise

HTTP requests targeting /pages/account_add.php containing SQL metacharacters such as ', --, UNION, SELECT, or OR 1=1 in the id or amount parameters.
Unexpected database error messages or HTTP 500 responses originating from account_add.php.
Outbound database queries from the application server that diverge from established baselines, including large SELECT statements or INFORMATION_SCHEMA reads.
Sudden creation, modification, or deletion of records in the account or inventory tables without corresponding legitimate user activity.

Detection Strategies

Deploy web application firewall (WAF) rules that inspect query string and POST body parameters submitted to account_add.php for SQL injection patterns.
Enable database query logging and alert on parameter values containing SQL syntax originating from web-tier service accounts.
Correlate web server access logs with database audit logs to surface anomalous query patterns tied to specific source IPs.

Monitoring Recommendations

Monitor authentication and authorization tables for unauthorized inserts or privilege modifications.
Track repeated 4xx and 5xx responses from account_add.php that may indicate injection probing.
Alert on outbound network connections from the database host that do not match expected administrative traffic.

How to Mitigate CVE-2025-6311

Immediate Actions Required

Restrict network access to the Campcodes Sales and Inventory System to trusted internal networks or VPN users until a patch is applied.
Deploy WAF signatures that block SQL injection payloads targeting the id and amount parameters of /pages/account_add.php.
Review database accounts used by the application and revoke unnecessary privileges such as FILE, SUPER, or schema-level write access where not required.
Audit recent web server and database logs for evidence of exploitation attempts against the vulnerable endpoint.

Patch Information

No vendor-supplied patch is referenced in the NVD entry at the time of publication. Administrators should monitor the Campcodes website for security updates and replace direct query construction in account_add.php with parameterized statements. Until a vendor patch is available, apply compensating controls and consider isolating or decommissioning the affected application.

Workarounds

Modify account_add.php to use prepared statements with bound parameters for id and amount instead of string concatenation.
Enforce strict server-side input validation that rejects non-numeric values where numeric IDs and amounts are expected.
Place the application behind a reverse proxy that performs request normalization and rate limiting on the /pages/account_add.php endpoint.
Run the database service under a least-privilege account that cannot read system tables or write outside the application schema.

bash

# Example WAF rule (ModSecurity) blocking SQLi patterns on the affected endpoint
SecRule REQUEST_URI "@beginsWith /pages/account_add.php" \
    "phase:2,deny,status:403,id:1006311,msg:'CVE-2025-6311 SQLi attempt',\
    chain"
    SecRule ARGS:id|ARGS:amount "@rx (?i)(union(\s)+select|or\s+1=1|--|;|/\*|\bsleep\s*\()" \
        "t:none,t:urlDecodeUni"