CVE-2026-4595
Cross-Site Scripting in Exam Form Submission /admin/update_s6.php
Publication date: 2026-03-23
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
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': "The CVE-2026-4595 vulnerability is a Cross-Site Scripting (XSS) issue found in the Exam Form Submission Project V1.0, specifically in the '/admin/update_s6.php' file."}, {'type': 'paragraph', 'content': "The root cause is the improper handling of the 'sname' parameter, where user input is directly output to the web page without adequate encoding or filtering."}, {'type': 'paragraph', 'content': "This flaw allows attackers to inject malicious scripts, which execute in the victim's browser."}] [1]
How can this vulnerability impact me? :
[{'type': 'paragraph', 'content': 'Exploitation of this vulnerability can lead to the theft of cookies, session tokens, and other sensitive information.'}, {'type': 'paragraph', 'content': "Attackers can perform unauthorized actions on behalf of the victim, deface webpages, redirect users to malicious sites, and potentially gain full control over the victim's browser."}, {'type': 'paragraph', 'content': 'Notably, exploitation does not require user login or authorization, making it easier for attackers to launch remote attacks.'}] [1]
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': "The vulnerability is a Cross-Site Scripting (XSS) issue in the '/admin/update_s6.php' file, specifically involving the 'sname' parameter. Detection can involve testing this parameter by injecting typical XSS payloads such as <script>prompt(/xss/);</script> to see if the script executes."}, {'type': 'paragraph', 'content': 'You can use tools like curl or browser-based testing to send requests with malicious payloads to the vulnerable parameter and observe if the response reflects the injected script without proper encoding.'}, {'type': 'list_item', 'content': 'Example curl command to test the vulnerability: curl -G --data-urlencode "sname=<script>prompt(/xss/);</script>" https://targetsite.com/admin/update_s6.php'}, {'type': 'list_item', 'content': "Use web vulnerability scanners that support XSS detection to automate testing of the 'sname' parameter."}] [1]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include properly encoding all user inputs based on their context (HTML, JavaScript, CSS, URL) to prevent execution of injected scripts.
- Implement strict input validation and filtering to accept only expected input formats and sanitize or reject malicious content such as script tags or event handlers.
- Deploy a strict Content Security Policy (CSP) to restrict the sources from which scripts can be loaded and executed.
- Set HttpOnly and Secure flags on sensitive cookies to prevent access via JavaScript and ensure cookies are transmitted only over HTTPS.
- Conduct regular security audits and code reviews to detect and remediate XSS and other vulnerabilities promptly.