EUVD-2026-21852

| CVE-2026-6159 MEDIUM
2026-04-13 VulDB GHSA-hh82-cfxx-fmf9
5.3
CVSS 4.0
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CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
P
Scope
X

Lifecycle Timeline

2
Analysis Generated
Apr 13, 2026 - 05:27 vuln.today
CVSS Changed
Apr 13, 2026 - 05:22 NVD
4.3 (MEDIUM) 5.3 (MEDIUM)

Tags

PHP XSS Simple Chatbox

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.

Analysis

Cross-site scripting (XSS) in Simple ChatBox up to version 1.0 allows remote attackers to inject malicious scripts via the msg parameter in the /chatbox/insert.php endpoint, with user interaction required. The vulnerability has publicly available exploit code and affects the PHP-based chat application component. …

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Priority Score

46
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +26
POC: +20

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EUVD-2026-21852 vulnerability details – vuln.today
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