An authenticated remote code execution vulnerability exists in GetSimpleCMS version 3.2.1. The application’s upload.php endpoint allows authenticated users to upload arbitrary files without proper validation of MIME types or extensions. By uploading a .pht file containing PHP code, an attacker can bypass blacklist-based restrictions and place executable code within the web root. A crafted request using a polyglot or disguised extension allows the attacker to execute the payload by accessing the file directly via the web server. This vulnerability exists due to the use of a blacklist for filtering file types instead of a whitelist.
History

Fri, 25 Jul 2025 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 25 Jul 2025 16:00:00 +0000

Type Values Removed Values Added
Description An authenticated remote code execution vulnerability exists in GetSimpleCMS version 3.2.1. The application’s upload.php endpoint allows authenticated users to upload arbitrary files without proper validation of MIME types or extensions. By uploading a .pht file containing PHP code, an attacker can bypass blacklist-based restrictions and place executable code within the web root. A crafted request using a polyglot or disguised extension allows the attacker to execute the payload by accessing the file directly via the web server. This vulnerability exists due to the use of a blacklist for filtering file types instead of a whitelist.
Title GetSimple CMS 3.2.1 Authenticated RCE via Arbitrary PHP File Upload
Weaknesses CWE-306
CWE-434
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2025-07-25T15:51:23.874Z

Updated: 2025-07-25T17:54:17.808Z

Reserved: 2025-07-24T20:10:35.487Z

Link: CVE-2013-10032

cve-icon Vulnrichment

Updated: 2025-07-25T17:53:23.026Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-07-25T16:15:24.550

Modified: 2025-07-29T14:14:55.157

Link: CVE-2013-10032

cve-icon Redhat

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