cvedb.io
CVE-2026-6257
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2026-04-20T20:16:49.107 · Last modified 2026-06-17T11:00:33.477

Summary

Vvveb CMS v1.0.8.2 contains a remote code execution vulnerability in its media management functionality where a missing return statement in the file rename handler allows authenticated attackers to rename files to blocked extensions .php or .htaccess. Attackers can exploit this logic flaw by first uploading a text file and renaming it to .htaccess to inject Apache directives that register PHP-executable MIME types, then uploading another file and renaming it to .php to execute arbitrary operating system commands as the www-data 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.