CVE-2026-86118 gonic before 0.22.0 Missing Administrator Check on the Subsonic startScan Endpoint
Authenticated users can trigger resource-intensive media scans due to missing admin checks, causing denial of service on gonic servers.
- 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-2026-86118?
CVE-2026-86118 is a medium-severity missing authorization vulnerability in sentriz gonic, published on 5 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
gonic versions before 0.22.0 fail to validate administrator privileges in the startScan endpoint, allowing any authenticated user to trigger media library rescans. Attackers can repeatedly call the startScan endpoint to force CPU and I/O-intensive filesystem operations, causing denial of service on multi-user instances.
Weakness: CWE-862
Which versions are affected by CVE-2026-86118?
How do I fix CVE-2026-86118?
No fix has been published for CVE-2026-86118 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-2026-86118 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86118 exists.
Sources
Also known as GHSA-453r-pgfw-h3pq, GHSA-58w8-8f5r-987p.