A critical SQL injection vulnerability in CodeAstro Simple Inventory System 1.0 allows unauthenticated remote attackers to compromise the application database.

This is a SQL injection vulnerability (CWE-89) located within the login functionality of the index.php file. The flaw allows an unauthenticated remote attacker to inject malicious SQL commands via the username argument.

The ability to perform unauthorized SQL queries against the database poses a significant risk to data confidentiality, integrity, and availability. With a CVSS score of 7.3, this high-severity flaw could lead to full database compromise, unauthorized data extraction, or administrative account takeover, potentially causing severe reputational damage and operational disruption.

Immediate Action: As no official vendor patch is currently available, users should restrict access to the login interface using network-level controls or consider disabling the service until a secure version is released.

Proactive Monitoring: Security teams should monitor web server logs for unusual SQL syntax or unexpected character patterns within the username field during authentication attempts.

Compensating Controls: Implement a Web Application Firewall (WAF) with strict SQL injection protection rules to inspect and block malicious payloads directed at the login endpoint.

Public Exploit Available: Yes — a public proof-of-concept exists as documented in the linked GitHub issue.

Given the availability of a public proof-of-concept and the lack of an official patch, this vulnerability presents an immediate risk to any deployment of CodeAstro Simple Inventory System 1.0. Organizations should assume an elevated risk profile and prioritize the implementation of compensating controls, such as WAF rules or network segmentation, to prevent exploitation until the vendor provides a remediation update.