Path Traversal Vulnerability in makafeli n8n-workflow-builder Software
CVE-2026-15521

4.8MEDIUM

Key Information:

Vendor

Makafeli

Status
N8n-workflow-builder
Vendor
CVE Published:
13 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-15521?

A path traversal vulnerability exists in the makafeli n8n-workflow-builder, specifically in the 'update_node_from_file' function of the server file. This issue allows an attacker to manipulate the 'filePath' argument, potentially leading to unauthorized access of restricted files and directories. The vulnerability can only be exploited locally, making it essential for users to be aware of their system's security posture. Despite prior notification of the issue to the developers, a resolution has not yet been provided, highlighting the importance of vigilance in software maintenance and updates.

Affected Version(s)

n8n-workflow-builder 0.1

n8n-workflow-builder 0.2

n8n-workflow-builder 0.3

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-2026-15521 - Proof of Concept

References

https://vuldb.com/vuln/377850
vdb-entrytechnical-description
https://vuldb.com/vuln/377850/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-15521
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
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

Mcfly_Zhang (VulDB User)
VulDB CNA Team
.