CVE-2018-19420

LowCVSS 3.8/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.0 3.8/10CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-434

Affected software

No affected versions have been published.

Timeline

Published
Nov 21, 2018
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2018

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