Path Traversal Vulnerability in kerwincui FastBee Tool Download Endpoint
CVE-2026-7676

5.3MEDIUM

Key Information:

Vendor

Kerwincui

Status
Fastbee
Vendor
CVE Published:
3 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7676?

A path traversal vulnerability was identified in the Tool Download Endpoint of kerwincui's FastBee, affecting versions up to 1.2.1. This flaw arises from the improper handling of the 'fileName' argument in the ToolController.download function. Attackers can exploit this vulnerability remotely to gain unauthorized access to files outside the intended directory. Despite early notifications to the vendor, no corrective actions have been undertaken, leaving systems susceptible to potential exploits.

Affected Version(s)

FastBee 1.2.0

FastBee 1.2.1

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-2026-7676 - Proof of Concept

References

https://vuldb.com/vuln/360829
vdb-entrytechnical-description
https://vuldb.com/vuln/360829/cti
signaturepermissions-required
https://vuldb.com/submit/800723
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
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

xcxr (VulDB User)
VulDB CNA Team
.