Vulnerabilities CVE-2021-47736

CVE-2021-47736

High

Open

TLP:CLEAR

CMSimple_XH 1.7.4 Authenticated Remote Code Execution via Content Editing

NVD CVE.org

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Description

CMSimple_XH 1.7.4 contains an authenticated remote code execution vulnerability in the content editing functionality that allows administrative users to upload malicious PHP files. Attackers with valid credentials can exploit the CSRF token mechanism to create a PHP shell file that enables arbitrary command execution on the server.

Details

CVSS Score: 8.6
EPSS Score ⓘ: 0.96%

58.5th percentile
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Confidence: 90%
Published: Dec 23, 2025
Last Modified: Jul 15, 2026

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