Exploitation Summary
CVE-2026-3395 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 4 public exploits from researchers including XiaomingX, HORKimhab, rootdirective-sec.
AI-analyzed exploit summary The repository contains a functional Python exploit for CVE-2026-3395, targeting MaxSite CMS <= 109.1 with the run_php plugin enabled. The exploit leverages unauthenticated access to preview-ajax.php, bypassing weak referrer checks to achieve remote code execution via eval() in the run_php plugin.
Description
A flaw has been found in MaxSite CMS up to 109.1. This impacts the function eval of the file application/maxsite/admin/plugins/editor_markitup/preview-ajax.php of the component MarkItUp Preview AJAX Endpoint. Executing a manipulation can lead to code injection. It is possible to launch the attack remotely. The exploit has been published and may be used. Upgrading to version 109.2 will fix this issue. This patch is called 08937a3c5d672a242d68f53e9fccf8a748820ef3. You should upgrade the affected component. The code maintainer was informed beforehand about the issues. He reacted very fast and highly professional.
Exploits (4)
The repository contains a functional Python exploit for CVE-2026-3395, targeting MaxSite CMS <= 109.1 with the run_php plugin enabled. The exploit leverages unauthenticated access to preview-ajax.php, bypassing weak referrer checks to achieve remote code execution via eval() in the run_php plugin.
This document provides a technical writeup of CVE-2026-3395, a code injection vulnerability in MaxSite CMS <=109.1 via the `eval` function in the `preview-ajax.php` endpoint of the MarkItUp editor plugin. The writeup includes patch details and references to external PoCs but does not contain exploit code itself.
This repository provides a functional Docker-based lab environment to demonstrate CVE-2026-3395, an unauthenticated RCE vulnerability in MaxSite CMS. It includes vulnerable and patched builds, along with a proof-of-concept exploit that leverages the `run_php` plugin to execute arbitrary PHP code via the `preview-ajax.php` endpoint.
The repository contains a functional Python exploit for CVE-2026-3395, targeting MaxSite CMS <= 109.1 with the run_php plugin enabled. The exploit leverages unauthenticated access to preview-ajax.php, bypassing weak referrer checks to achieve remote code execution via eval() in the run_php plugin.
References (5)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L