CVE-2026-3993
Cross-Site Scripting in itsourcecode Payroll /manage_employee_deductions.php
Publication date: 2026-03-12
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| itsourcecode | payroll_management_system | 1.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
| CWE-94 | The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
[{'type': 'paragraph', 'content': 'CVE-2026-3993 is a Cross-Site Scripting (XSS) vulnerability found in the itsourcecode Payroll Management System version 1.0, specifically in the file manage_employee_deductions.php.'}, {'type': 'paragraph', 'content': "The vulnerability arises because the 'id' parameter in the URL is directly reflected in the page output without proper input sanitization or encoding. This allows an attacker to inject arbitrary JavaScript code that executes in the victim's browser context."}, {'type': 'paragraph', 'content': 'Exploitation does not require authentication; an attacker only needs to trick a user into visiting a maliciously crafted URL containing the injected script.'}, {'type': 'paragraph', 'content': 'Examples of payloads include scripts that can display alerts, steal cookies, or redirect users to phishing sites.'}] [1, 2, 3]
How can this vulnerability impact me? :
[{'type': 'paragraph', 'content': 'This vulnerability can lead to several impacts including session hijacking, unauthorized actions performed on behalf of the user, data theft, and malware distribution.'}, {'type': 'paragraph', 'content': "Because the injected scripts run in the context of the victim's browser, attackers can steal sensitive information such as cookies or redirect users to malicious websites."}, {'type': 'paragraph', 'content': 'The integrity of the system is compromised as attackers can perform unauthorized actions or expose data through script injection.'}] [1, 3]
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
[{'type': 'paragraph', 'content': 'This vulnerability can be detected by testing the \'id\' parameter in the URL of the manage_employee_deductions.php page for cross-site scripting (XSS) flaws. One way to do this is by visiting a URL with a crafted payload that injects JavaScript code, such as: http://[target]/manage_employee_deductions.php?id="><script>alert(0)</script><". If an alert box appears or the script executes, the system is vulnerable.'}, {'type': 'paragraph', 'content': 'Additionally, attackers or testers can use Google dorking with the query inurl:manage_employee_deductions.php to identify potentially vulnerable targets.'}, {'type': 'list_item', 'content': 'Visit the URL with a basic XSS payload: http://[target]/manage_employee_deductions.php?id="><script>alert(document.domain)</script>'}, {'type': 'list_item', 'content': "Use curl or wget to fetch the page and inspect if the 'id' parameter is reflected unsanitized in the response."}, {'type': 'list_item', 'content': 'Example curl command: curl -s "http://[target]/manage_employee_deductions.php?id=\\"><script>alert(0)</script><" | grep -i script'}] [1, 3]
What immediate steps should I take to mitigate this vulnerability?
[{'type': 'paragraph', 'content': "Immediate mitigation steps include implementing proper input validation and output encoding on the 'id' parameter in manage_employee_deductions.php to prevent injection of malicious scripts."}, {'type': 'list_item', 'content': 'Validate input by rejecting special characters and using an allow-list approach.'}, {'type': 'list_item', 'content': 'Apply output encoding functions such as htmlspecialchars() or htmlentities() to neutralize any injected scripts.'}, {'type': 'list_item', 'content': 'Implement security headers like Content-Security-Policy and X-XSS-Protection to reduce the risk of script execution.'}, {'type': 'paragraph', 'content': 'If possible, consider replacing the affected product with a secure alternative until a patch or update is available.'}] [1, 3]