AUGUST 4, 2026
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Case File

CVE-2021-47904

HIGH · CVSS 8.8 EPSS 0.61% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-01-23 · 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
GitHub PoC Links
External Security References

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

CVE
CVE-2021-47904
Severity
HIGH
CVSS
8.8
EPSS
0.61%

Original NVD Description

PhreeBooks 5.2.3 contains an authenticated file upload vulnerability in the Image Manager that allows remote code execution. Attackers can upload a malicious PHP web shell by exploiting unrestricted file type uploads to gain command execution on the server.