CVE-2026-3683 bufanyun HotGo Endpoint upload.go ImageTransferStorage server-side request forgery
Remote attackers can exploit a server-side request forgery flaw in HotGo's image transfer function to access internal resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3683?
CVE-2026-3683 is a medium-severity server-side request forgery vulnerability in bufanyun HotGo, published on 7 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-918
Which versions are affected by CVE-2026-3683?
How do I fix CVE-2026-3683?
No fix has been published for CVE-2026-3683 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-3683 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3683 exists.
Sources
Also known as GHSA-r4rq-7w7j-cmr6.