Executive Summary

CVE-2026-7269 is a Cross-Site Scripting (XSS) vulnerability found in the Pharmacy Sales and Inventory System 1.0, specifically in the '/index.php?page=product' file. The vulnerability occurs because the application directly outputs user-supplied input from the 'id' parameter without proper encoding or filtering. This allows attackers to inject and execute arbitrary JavaScript code in the victim's browser.

An attacker can exploit this vulnerability remotely by manipulating the 'id' argument in the URL to inject malicious scripts, such as the proof-of-concept payload `<script>prompt(/xss/);</script>`. This lack of input validation and output encoding makes the system vulnerable to script injection attacks.

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Compliance Impact

The Cross-Site Scripting (XSS) vulnerability in the Pharmacy Sales and Inventory System allows attackers to execute arbitrary JavaScript code, potentially stealing cookies, session tokens, and other sensitive information. This unauthorized access and data exposure can lead to violations of data protection regulations such as GDPR and HIPAA, which mandate the protection of personal and sensitive information.

Failure to properly secure user inputs and prevent such attacks may result in non-compliance with these standards, as they require organizations to implement adequate security controls to protect user data from unauthorized access and breaches.

Therefore, this vulnerability poses a risk to compliance by exposing sensitive data and undermining the confidentiality and integrity requirements set forth by common regulations.

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Impact Analysis

This XSS vulnerability can have severe impacts including allowing attackers to steal cookies, session tokens, or other sensitive information from users.

• Attackers can perform unauthorized actions on behalf of the victim.
• They can deface web pages or redirect users to malicious sites.
• It may lead to attackers gaining control over the victim's browser.

Exploitation does not require user authentication or authorization, increasing the risk and ease of attack.

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Detection Guidance

This vulnerability can be detected by testing the 'id' parameter in the URL of the affected page for cross-site scripting (XSS) payloads. For example, injecting a script tag such as <script>prompt(/xss/);</script> into the 'id' parameter and observing if it executes in the browser indicates the presence of the vulnerability.

A practical way to test this is by accessing a URL like: http://127.0.0.1/pharmacy/index.php?page=product&id=<script>prompt(/xss/);</script> and checking if a prompt box appears, which confirms the XSS vulnerability.

Network or system administrators can also use web vulnerability scanners that support XSS detection to automate this process.

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Mitigation Strategies

• Implement proper output encoding to ensure user inputs are treated as text rather than executable code.
• Strictly validate and sanitize user inputs, allowing only expected formats and rejecting or escaping potentially malicious content such as script tags.
• Apply a strict Content Security Policy (CSP) to restrict sources of executable scripts and prevent unauthorized script execution.
• Set the HttpOnly and Secure flags on sensitive cookies to prevent JavaScript access and ensure cookies are transmitted only over HTTPS.
• Conduct regular security audits and code reviews to detect and address XSS and other vulnerabilities promptly.

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