CVE-2026-107363 Missing authorization in Zaqar
Authenticated users can access other projects' queues via WebSocket transport, leading to unauthorized data disclosure and modification.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-107363?
CVE-2026-107363 is a medium-severity missing authorization vulnerability in OpenStack Zaqar, published on 7 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In OpenStack Zaqar before 23.0.1, the WebSocket transport fails to bind the project identifier in subsequent requests to the project authenticated by the Keystone token. An authenticated user with a valid token for one project may substitute another project's UUID to enumerate, inspect, create, or delete queues belonging to that project, resulting in unauthorized disclosure, modification, or loss of queue data. Only deployments using the WebSocket transport with Keystone authentication are affected.
Weakness: CWE-472
Which versions are affected by CVE-2026-107363?
How do I fix CVE-2026-107363?
Upgrade to a fixed version.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-107363 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-107363 exists.
Sources
Also known as DEBIAN-CVE-2026-107363, GHSA-hc4w-8h6h-frmg, UBUNTU-CVE-2026-107363.