Vulnerability: HTML Uploads Allowed in GetSimpleCMS 3.3.15

CVE-2018-19421 · MEDIUM Severity

AV:N/AC:L/AU:S/C:N/I:P/A:N

In GetSimpleCMS 3.3.15, admin/upload.php blocks .html uploads but Internet Explorer render HTML elements in a .eml file, because of admin/upload-uploadify.php, and validate_safe_file in admin/inc/security_functions.php.

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