ImpressCMS 1.4.4 - Unrestricted File Upload | Advisories

Advisories

ImpressCMS 1.4.4 - Unrestricted File Upload

severity: critical
date: January 13, 2026
Affecting: ImpressCMS 1.4.4
CVE: CVE-2022-50912
CWE: CWE-434 Unrestricted Upload of File with Dangerous Type
CVSS: 9.3
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: ExploitDB-50890
Official ImpressCMS Homepage
ImpressCMS GitHub Repository
Credit: Ünsal Furkan Harani (Zemarkhos)
Description: ImpressCMS 1.4.4 contains a file upload vulnerability with weak extension sanitization that allows attackers to upload potentially malicious files. Attackers can bypass file upload restrictions by using alternative file extensions .php2.php6.php7.phps.pht to execute arbitrary PHP code on the server.