bufanyun HotGo up to 2.0 Endpoint upload.go ImageTransferStorage server-side request forgery
Summary
A vulnerability was found in bufanyun HotGo up to 2.0. It has been classified as critical. Impacted is the function ImageTransferStorage of the file /server/internal/logic/common/upload.go of the component Endpoint. This manipulation causes server-side request forgery.
This vulnerability is registered as CVE-2026-3683. Remote exploitation of the attack is possible. Furthermore, an exploit is available.
The vendor was contacted early about this disclosure but did not respond in any way.
Details
A vulnerability was found in bufanyun HotGo up to 2.0. It has been declared as critical. Affected by this vulnerability is the function ImageTransferStorage of the file /server/internal/logic/common/upload.go of the component Endpoint. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability.
The advisory is shared at github.com. This vulnerability is known as CVE-2026-3683. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known.
It is possible to download the exploit at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The vulnerability is also documented in the databases at CNNVD (CNNVD-202603-1449) and EUVD (EUVD-2026-10198). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Product
Vendor
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒
CVSSv3
VulDB Meta Base Score: 6.3VulDB Meta Temp Score: 6.0
VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍
CNA Base Score: 6.3
CNA Vector: 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Server-side request forgeryCWE: CWE-918
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
03/06/2026 Advisory disclosed03/06/2026 VulDB entry created
03/09/2026 VulDB entry last update
Sources
Advisory: github.comStatus: Not defined
CVE: CVE-2026-3683 (🔒)
GCVE (CVE): GCVE-0-2026-3683
GCVE (VulDB): GCVE-100-349585
EUVD: 🔒
CNNVD: CNNVD-202603-1449 - HotGo-V2 代码问题漏洞
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 03/06/2026 22:37Updated: 03/09/2026 22:26
Changes: 03/06/2026 22:37 (57), 03/08/2026 16:21 (30), 03/09/2026 02:38 (1), 03/09/2026 22:26 (6)
Complete: 🔍
Cache ID: 216::103
Submit
Accepted
- Submit #765588: bufanyun HotGo <= v2.0 Server-Side Request Forgery (by github.com)
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
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