SSRF in Bufanyun Hotgo
CVE-2026-3683
A vulnerability was detected in bufanyun HotGo up to 2.0. This issue affects the function ImageTransferStorage of the file /server/internal/logic/common/upload.go of the component Endpoint. The manipulation results in server-side request forgery. The attack may be launched remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (26.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Bufanyun Hotgo — versions 2.0
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/CC-T-454455/Vulnerabilities/tree/master/hotgo/vulnerability-1 (exploit)
Frequently asked questions
- What is CVE-2026-3683?
- CVE-2026-3683 is a medium-severity vulnerability in Bufanyun Hotgo, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.3/10. Published 2026-03-08.
- How severe is CVE-2026-3683?
- Medium severity. CVSS v3 base score is 6.3 out of 10.