CVE-2026-100289 Missing authorization in Server
An authenticated low-privileged user can bypass authorization to perform internal network discovery and port scanning via the gateway API.
- 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-2026-100289?
CVE-2026-100289 is a medium-severity missing authorization vulnerability in Devolutions Server, published on 29 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Missing authorization in the gateway network scan token API in Devolutions Server 2026.3.5.0 and earlier allows an authenticated low-privileged user to generate a network scan token and perform internal network discovery and port scanning through the gateway via a crafted API request.
Weakness: CWE-862
Which versions are affected by CVE-2026-100289?
How do I fix CVE-2026-100289?
No fix has been published for CVE-2026-100289 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-100289 being exploited?
There is no known exploitation of CVE-2026-100289 in the wild and no public exploit code.
Sources
Also known as GHSA-837f-85w4-23xg.