Impact Analysis

Successful exploitation of this vulnerability allows attackers to execute arbitrary JavaScript code in the context of authenticated users.

• Session hijacking - attackers can steal session cookies to impersonate users.
• Privilege escalation - attackers may perform unauthorized actions by leveraging the injected scripts.
• Compromise of data integrity - malicious scripts can manipulate or alter data displayed or processed by the application.
• Potential widespread impact as the malicious script executes on every page load across the application for all users.

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Executive Summary

[{'type': 'paragraph', 'content': 'CVE-2026-3766 is a stored Cross-Site Scripting (XSS) vulnerability found in SourceCodester Web-based Pharmacy Product Management System version 1.0, specifically in the edit-profile.php file.'}, {'type': 'paragraph', 'content': 'The vulnerability arises because the application does not properly sanitize or encode user input in the "fullname" parameter during profile updates. This allows an authenticated attacker to inject malicious JavaScript code into the fullname field.'}, {'type': 'paragraph', 'content': 'The injected script is persistently stored in the database and then rendered in global parts of the application, such as the header or navigation bar, causing the malicious code to execute automatically on every page load for users.'}, {'type': 'paragraph', 'content': 'Exploitation requires authentication and user interaction, and the attack can be initiated remotely.'}] [1, 2, 3]

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Compliance Impact

I don't know

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Detection Guidance

[{'type': 'paragraph', 'content': 'This vulnerability can be detected by identifying the presence of the vulnerable edit-profile.php page in the SourceCodester Web-based Pharmacy Product Management System version 1.0 and testing the fullname parameter for cross-site scripting (XSS) flaws.'}, {'type': 'paragraph', 'content': 'One method to find potentially vulnerable targets is using Google dorking with queries such as "inurl:edit-profile.php" to locate instances of the affected page.'}, {'type': 'paragraph', 'content': "To confirm the vulnerability, an authenticated user can attempt to inject a script tag into the fullname field on the Edit Profile page, for example: `<script>alert('XSS')</script>`. If the script executes upon page rendering, the system is vulnerable."}] [1, 3]

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Mitigation Strategies

No known countermeasures or mitigations have been documented for this vulnerability.

It is suggested to consider replacing the affected product with an alternative that does not contain this vulnerability.

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