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High · 7.8 CVE-2021-47734 EUVD-2025-204835GHSA-62fv-j8g5-r47m

CMSimple 5.4 Authenticated Local File Inclusion Remote Code Execution

Published Dec 23, 2025 · Updated Mar 17, 2026 · Assigned by VulnCheck

Description

CMSimple 5.4 contains an authenticated local file inclusion vulnerability that allows remote attackers to manipulate PHP session files and execute arbitrary code. Attackers can leverage the vulnerability by changing the functions file path and uploading malicious PHP code through session file upload mechanisms.

Affected products

VendorProductAffectedFixed
Cmsimple CMSimple CMSimple 5.4 —

References