CVE-2021-47736

HIGH EPSS 56.0%
Published Dec 23, 20256mo ago · Modified Jun 17, 20261w ago
8.6 CVSS 4.0
High
Find Similar
Published Dec 23, 2025 6mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
8.6
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
56.0% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-94 Improper Control of Generation of Code (Code Injection) Injection

Affected Products 1

VendorProductVersionRange
cmsimple-xhcmsimple_xh1.7.4any

References 3

  • cmsimple-xh.org https://www.cmsimple-xh.org/
    Product
  • exploit-db.com https://www.exploit-db.com/exploits/50367
    ExploitThird Party AdvisoryVDB Entry
  • vulncheck.com https://www.vulncheck.com/advisories/cmsimplexh-authenticated-remote-code-execution-via-content-editing
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.