Vulnerability · Published Apr 13, 2026 · Assigned by VulDB

CVE-2026-6159code-projects Simple ChatBox Endpoint insert.php cross site scripting

Medium 4.3

In plain English

A medium-severity cross-site scripting in Simple ChatBox from code-projects. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 80.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
code-projects	Simple ChatBox	1.0

Weakness: CWE-79, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

References

VDB-357039 | code-projects Simple ChatBox Endpoint insert.php cross site scripting vdb-entry, technical-description
VDB-357039 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #796666 | code-projects Simple ChatBox In PHP 1.0 Cross Site Scripting third-party-advisory
https://github.com/ahmadmarz10-hub/CVEsMarz/blob/main/Stored%20Cross-Site%20Scripting%20(XSS)%20in%20Simple%20Chatbox%20PHP%20msg%20Parameter.md exploit
https://code-projects.org/ product