Unrestricted File Upload Vulnerability in PuMuKIT Application
CVE-2026-4337

8.8HIGH

Key Information:

Vendor

Pumukit

Status
Pumukit
Vendor
CVE Published:
27 October 2026

What is CVE-2026-4337?

The PuMuKIT application is susceptible to an unrestricted file upload vulnerability, allowing unauthenticated users to upload any file type to the server. This flaw enables attackers to place malicious files on the server, which can lead to arbitrary code execution, data breaches, or the ability to delete critical files, posing a significant risk to system integrity and confidentiality.

Affected Version(s)

PuMuKIT current version

References

https://www.incibe.es/en/incibe-cert/notices/aviso/unrest...

CVSS V4

Score:
8.8
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

David Herrero de la Peña
.