CVE-2026-70554

MaxSite CMS contains a PHP object injection vulnerability that allows unauthenticated attackers to execute arbitrary code by passing attacker-controlled serialized data in the maxsitecomuser cookie directly to unserialize without validation or class allowlisting. Attackers can craft a malicious...

CVE-2026-70554

CVE-2026-70554 affects MaxSite CMS. It describes an unauthenticated PHP object injection via the maxsite_comuser cookie, where unvalidated serialized data is passed directly to unserialize(), allowing an attacker to reconstruct object graphs and trigger magic methods. This can enable property-ori...

CVE-2026-70553 MaxSite CMS Unauthenticated RCE via Install Endpoint

MaxSite CMS contains a remote code execution vulnerability that allows unauthenticated attackers to inject arbitrary PHP code into the application configuration file by submitting crafted POST requests to the install endpoint after installation is complete. Attackers can supply a malicious...

CVE-2026-70553

MaxSite CMS is affected by an unauthenticated remote code execution vulnerability. An attacker can submit crafted POST data to the install endpoint after installation, using a malicious db_dbprefix value to break out of a PHP string in application/config/database.php and inject PHP statements tha...

CVE-2026-70553 MaxSite CMS Unauthenticated RCE via Install Endpoint

MaxSite CMS contains a remote code execution vulnerability that allows unauthenticated attackers to inject arbitrary PHP code into the application configuration file by submitting crafted POST requests to the install endpoint after installation is complete. Attackers can supply a malicious...

CVE-2026-70552 MaxSite CMS 109.5 Unauthenticated AJAX Dispatcher Bypass via ajax.php

MaxSite CMS 109.5 and earlier contains an authentication bypass vulnerability in the AJAX dispatcher that allows unauthenticated attackers to access admin-gated endpoints by supplying any X-Requested-With header and requesting a base64-encoded path resolving to any -ajax.php file in the codebase...

CVE-2026-70552

MaxSite CMS 109.5 and earlier contains an authentication bypass vulnerability in the AJAX dispatcher that allows unauthenticated attackers to access admin-gated endpoints by supplying any X-Requested-With header and requesting a base64-encoded path resolving to any -ajax.php file in the codebase...

EUVD-2026-52909

MaxSite CMS 109.5 and earlier contains an authentication bypass vulnerability in the AJAX dispatcher that allows unauthenticated attackers to access admin-gated endpoints by supplying any X-Requested-With header and requesting a base64-encoded path resolving to any -ajax.php file in the codebase...

CVE-2026-70552 MaxSite CMS 109.5 Unauthenticated AJAX Dispatcher Bypass via ajax.php

MaxSite CMS 109.5 and earlier contains an authentication bypass vulnerability in the AJAX dispatcher that allows unauthenticated attackers to access admin-gated endpoints by supplying any X-Requested-With header and requesting a base64-encoded path resolving to any -ajax.php file in the codebase...

CVE-2026-70552

MaxSite CMS

CVE-2026-70554: Deserialization of Untrusted Data

MaxSite CMS contains a PHP object injection vulnerability that allows unauthenticated attackers to execute arbitrary code by passing attacker-controlled serialized data in the maxsitecomuser cookie directly to unserialize without validation or class allowlisting. Attackers can craft a malicious...

CVE-2026-70553: Improper Control of Generation of Code

MaxSite CMS contains a remote code execution vulnerability that allows unauthenticated attackers to inject arbitrary PHP code into the application configuration file by submitting crafted POST requests to the install endpoint after installation is complete. Attackers can supply a malicious...

CVE-2026-70552: Missing Authentication for Critical Function

MaxSite CMS 109.5 and earlier contains an authentication bypass vulnerability in the AJAX dispatcher that allows unauthenticated attackers to access admin-gated endpoints by supplying any X-Requested-With header and requesting a base64-encoded path resolving to any -ajax.php file in the codebase...

VulnCheck KEV: CVE-2026-3395

A flaw has been found in MaxSite CMS up to 109.1. This impacts the function eval of the file application/maxsite/admin/plugins/editormarkitup/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...

CVE-2026-37700

Cross Site Scripting vulnerability in MaxSite CMS v.109.2 allows a remote attacker to obtain sensitive information via the Backend page file upload endpoint used by adminpage...

CVE-2026-37700

Cross Site Scripting vulnerability in MaxSite CMS v.109.2 allows a remote attacker to obtain sensitive information via the Backend page file upload endpoint used by adminpage...

CVE-2026-37700

A Cross-Site Scripting (XSS) vulnerability exists in MaxSite CMS v.109.2 , an open-source content management system. The flaw is located in the Backend page file upload endpoint used by the admin_page . A remote attacker can exploit this vulnerability to obtain sensitive information . No newer ve...

PT-2026-46059

Name of the Vulnerable Software and Affected Versions MaxSite CMS version 109.2 Description A Cross Site Scripting issue allows a remote attacker to obtain sensitive information. This occurs via the Backend page file upload endpoint used by admin page. Recommendations At the moment, there is no...

CVE-2026-37700

Cross Site Scripting vulnerability in MaxSite CMS v.109.2 allows a remote attacker to obtain sensitive information via the Backend page file upload endpoint used by adminpage...

maxsite cms 跨站脚本漏洞

MaxSite CMS is an open-source website content management system developed by MaxSite in Russia. Version 109.2 of MaxSite CMS has a security vulnerability. This vulnerability stems from a cross-site scripting vulnerability in the backend page file upload endpoint, which could allow remote attacker...