Unrestricted Upload Vulnerability in GreenCMS Affects File Management Features
CVE-2026-7043

5.3MEDIUM

Key Information:

Vendor

GreenCMS

Status
Greencms
Vendor
CVE Published:
26 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7043?

A significant vulnerability has been identified in GreenCMS versions up to 2.3, affecting the pluginAddLocal function in the index.php file. This flaw allows for unrestricted file uploads, enabling attackers to execute remote exploits. As this vulnerability affects unsupported products, it is essential for users still running these versions to be aware of the potential risks and to consider upgrading to secure versions or employing additional security measures.

Affected Version(s)

GreenCMS 2.0

GreenCMS 2.1

GreenCMS 2.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-7043 - Proof of Concept

References

https://vuldb.com/vuln/359622
vdb-entrytechnical-description
https://vuldb.com/vuln/359622/cti
signaturepermissions-required
https://vuldb.com/submit/798529
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

R21Z20 (VulDB User)
.