CVE-2021-47736
CVSS v3
7.2
HIGH
EPSS Score
1.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2025-12-23
Frequently asked questions
What is CVE-2021-47736?
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.
Is CVE-2021-47736 actively exploited?
Active exploitation of CVE-2021-47736 has not been confirmed. Its EPSS score was 1.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-47736?
CVE-2021-47736 has a CVSS v3 base score of 7.2 (HIGH severity).
Is CVE-2021-47736 affecting your environment?
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