CVE-2018-19420

In GetSimpleCMS 3.3.15, admin/upload.php blocks .html uploads but there are several alternative cases in which HTML can be executed, such as a file with no extension or an unrecognized extension (e.g., the test or test.asdf filename), because of admin/upload-uploadify.php, and validate_safe_file in admin/inc/security_functions.php.

Affected products

Getsimple Cms

Get-simple Getsimple Cms

= 3.3.15

Fix

Available

CVSS 2.0

4.0 MEDIUM

CVSS 3.1

3.8 LOW

EPSS

0.8% (54th percentile)

Weakness

CWE-434

NVD status

Modified

Published

2018-11-21