CVE-2026-107363: Openstack Zaqar

Medium severity, CVSS 6.1. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Openstack Zaqar: from 1.0.0, before 20.1.3 (fixed in 20.1.3); from 21.0.0, before 21.0.3 (fixed in 21.0.3); from 22.0.0, before 22.0.3 (fixed in 22.0.3); from 23.0.0, before 23.0.1 (fixed in 23.0.1)

Published 2026-10-07. Last modified 2026-10-08.