CVE-2026-3043
Cross-Site Scripting in itsourcecode EMS /admin/navbar.php
Publication date: 2026-02-24
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 |
|---|---|---|
| admerc | event_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-2026-3043 is a Cross-Site Scripting (XSS) vulnerability found in the itsourcecode Event Management System version 1.0, specifically in the /admin/navbar.php file. The vulnerability arises because the 'page' URL parameter accepts user input that is directly reflected in the web page output without proper sanitization or validation."}, {'type': 'paragraph', 'content': "This flaw allows attackers to inject arbitrary JavaScript code that executes within the victim's browser context. Exploitation requires no authentication and can be triggered remotely by convincing a user to visit a maliciously crafted URL."}] [1, 2, 3]
How can this vulnerability impact me? :
[{'type': 'paragraph', 'content': 'The vulnerability can lead to several harmful 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 sites."}] [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 checking for the presence of the vulnerable URL pattern involving the /admin/navbar.php page parameter. Specifically, you can look for URLs that include the 'page' argument which is susceptible to reflected cross-site scripting (XSS)."}, {'type': 'paragraph', 'content': 'One method to identify vulnerable targets is by using Google dorking with the query: inurl:admin/navbar.php.'}, {'type': 'paragraph', 'content': "To test for the vulnerability on your system, you can manually visit or use tools to send requests with payloads such as: </script><script>alert(0)</script><script> in the 'page' parameter and observe if the JavaScript executes."}, {'type': 'paragraph', 'content': 'Example command using curl to test the vulnerability:'}, {'type': 'list_item', 'content': 'curl -i "http://your-target/admin/navbar.php?page=</script><script>alert(0)</script><script>"'}, {'type': 'paragraph', 'content': 'If the response contains the injected script without sanitization, the system is vulnerable.'}] [2, 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 to prevent the injection and execution of malicious scripts.'}, {'type': 'list_item', 'content': "Validate input by rejecting special characters and using an allow-list approach for the 'page' parameter."}, {'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 (CSP) and X-XSS-Protection to reduce the impact of XSS attacks.'}, {'type': 'paragraph', 'content': 'Additionally, conduct regular security testing to detect and address such vulnerabilities proactively.'}, {'type': 'paragraph', 'content': 'If possible, consider replacing the affected product with an alternative solution as no official mitigations or patches have been documented.'}] [2, 3]