cvedb.io
CVE-2026-70553
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-08-04T20:16:56.023 · Last modified 2026-08-04T20:16:56.023

Summary

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.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.