Server-Side Request Forgery Vulnerability in bufanyun HotGo Product
CVE-2026-3683

5.3MEDIUM

Key Information:

Vendor

Bufanyun

Status
Hotgo
Vendor
CVE Published:
7 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3683?

A vulnerability exists in bufanyun HotGo, particularly in the ImageTransferStorage function located in /server/internal/logic/common/upload.go. This vulnerability allows attackers to conduct server-side request forgery (SSRF) attacks, which can be executed remotely. The exploit is publicly available, and despite early notification to the vendor, no response has been received regarding the issue.

Affected Version(s)

HotGo 2.0

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-2026-3683 - Proof of Concept

References

https://vuldb.com/?id.349585
vdb-entrytechnical-description
https://vuldb.com/?ctiid.349585
signaturepermissions-required
https://vuldb.com/?submit.765588
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

VulDB
.