Read the docs
TI-2021-22518 Aliases CVE-2021-47904GHSA-xcxf-266c-6x5q

PhreeBooks 5.2.3 - Remote Code Execution

Priority HIGH 73CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00715 53rd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
PhreesoftPhreeBooks5.2.3—No fix listedCNA
  • PhreeBooks VendorPhreesoft Affected 5.2.3 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-47904
  2. 2026-10-03 Alias added: GHSA-xcxf-266c-6x5q

References

Exploit 2

Other 2

  • TI-2019-15700 PhreeBooks ERP 5.2.3 Remote Code Execution via Image Manager CVSS 4.0HIGH 8.7
  • TI-2019-15683 PhreeBooks ERP 5.2.3 Arbitrary File Upload via Image Manager CVSS 4.0HIGH 8.7
  • TI-2017-03903 An issue was discovered in PhreeBooksERP before 2017-02-13. CVSS 3.0MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences