Description
In OpenStack Zaqar before 22.0.2, WSGI transport mishandles the URL-Signature header. By sending a request with an empty URL-Signature header, an unauthenticated remote attacker who knows a target project's UUID may bypass both Keystone authentication and pre-signed URL verification, resulting in the ability to read, enumerate, create, and delete that project's queues, messages, claims, and subscriptions. By additionally claiming an administrative role, the attacker may also perform administrative operations, such as managing pools and flavors in admin_mode deployments. Only deployments using the WSGI transport with an authentication strategy configured are affected; the websocket transport is not affected.
Published: 2026-09-24
Score: 9.2 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 25 Sep 2026 06:00:00 +0000

Type Values Removed Values Added
First Time appeared Openstack
Openstack zaqar
Vendors & Products Openstack
Openstack zaqar

Thu, 24 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
References

Thu, 24 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
Description In OpenStack Zaqar before 22.0.2, WSGI transport mishandles the URL-Signature header. By sending a request with an empty URL-Signature header, an unauthenticated remote attacker who knows a target project's UUID may bypass both Keystone authentication and pre-signed URL verification, resulting in the ability to read, enumerate, create, and delete that project's queues, messages, claims, and subscriptions. By additionally claiming an administrative role, the attacker may also perform administrative operations, such as managing pools and flavors in admin_mode deployments. Only deployments using the WSGI transport with an authentication strategy configured are affected; the websocket transport is not affected.
Weaknesses CWE-348
References
Metrics cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Openstack Zaqar
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-24T18:09:34.688Z

Reserved: 2026-09-24T14:34:16.502Z

Link: CVE-2026-97404

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-24T15:18:01.537

Modified: 2026-09-24T21:08:22.573

Link: CVE-2026-97404

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-25T05:45:17Z

Weaknesses
  • CWE-348

    Use of Less Trusted Source