{"id":"CVE-2026-70553","published":"2026-08-04T20:16:56.023","lastModified":"2026-08-05T20:17:17.020","description":"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 db_dbprefix value containing a single quote to break out of a PHP string literal in application/config/database.php, appending attacker-controlled PHP statements that are executed by the web server on every subsequent request, resulting in persistent unauthenticated remote code execution as the web-server process user.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-94"],"vendors":[],"products":[],"references":[{"url":"https://github.com/maxsite/cms","tags":[]},{"url":"https://max-3000.com/page/maxsite-cms-109-6","tags":[]},{"url":"https://www.vulncheck.com/advisories/maxsite-cms-unauthenticated-rce-via-install-endpoint","tags":[]}],"exploitRefs":[{"url":"https://github.com/maxsite/cms","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows unauthenticated attackers to inject arbitrary PHP code into the application configuration file via crafted POST requests, leading to persistent remote code execution.","exploitability":"Exploitation is relatively straightforward once the install endpoint is accessed after installation completion; attackers need only submit a malicious db_dbprefix value.","blast_radius":"If exploited, this vulnerability could result in full control over the web server and application, potentially leading to data theft or system compromise.","remediation":"Update MaxSite CMS to the latest version that addresses this vulnerability immediately.","tags":["rce","web","cms","unauth","php"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-08-11T06:42:27.548Z"}}