CVE-2018-19420

PoC —

CVSS 3.0

3.8 low

EPSS

<1%p54

Published

Nov 21, 2018 (Nov 21, 2018)

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.

Vendors: get-simple
Products: getsimple cms
Weakness: CWE-434
Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.8%)

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