AUGUST 4, 2026
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Case File

CVE-2021-47735

HIGH · CVSS 8.8 EPSS 0.77% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-12-23 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.8. Public exploit code or proof-of-concept references have been detected in its references. It may be remotely exploitable.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit remote code execution code execution
External Security References

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-47735
Severity
HIGH
CVSS
8.8
EPSS
0.77%

Original NVD Description

CMSimple 5.4 contains an authenticated remote code execution vulnerability that allows logged-in attackers to inject malicious PHP code into template files. Attackers can exploit the template editing functionality by crafting a reverse shell payload and saving it through the template editing endpoint with a valid CSRF token.

Related CVEs

Other vulnerabilities affecting the same vendor(s)