---
id: CVE-2026-107363
title: >-
  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
summary: >-
  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
  substi…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-472
vendor: OpenStack
product: Zaqar
affected:
  - Zaqar >= 1.0.0 < 20.1.3
  - Zaqar >= 21.0.0 < 21.0.3
  - Zaqar >= 22.0.0 < 22.0.3
  - Zaqar >= 23.0.0 < 23.0.1
published: '2026-10-07'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T21:17:15.690'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107363'
references:
  - url: 'https://launchpad.net/bugs/2161402'
    label: cve@mitre.org
  - url: 'https://www.openwall.com/lists/oss-security/2026/10/07/30'
    label: cve@mitre.org
  - url: 'https://launchpad.net/bugs/2161402'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-07T20:36:31.306438Z'
cvssSource: cna
ingestedAt: '2026-10-07T20:46:46.996Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.