RCE in Code-Projects Simple Chatbox
CVE-2026-6159
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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.003 (18.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
Affected products
- Code-projects Simple Chatbox — versions 1.0
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (exploit)
- cna@vuldb.com (product)
Frequently asked questions
- What is CVE-2026-6159?
- CVE-2026-6159 is a medium-severity vulnerability in Code-Projects Simple Chatbox, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2026-04-13.
- How severe is CVE-2026-6159?
- Medium severity. CVSS v3 base score is 4.3 out of 10.