CVE-2026-93856: CWE-669 Incorrect Resource Transfer Between Spheres in OpenStack Cinder
Description
In OpenStack Cinder through 29.0.0, cross-project information disclosure can occur in the Messages API. A non-admin user with the project-scoped 'member' or 'reader' role making the Block Storage API v3.3 "List messages" call finds the non-expired user messages for other projects included in the response, resulting in the leakage of UUIDs of resources owned by other projects, in addition to the user message about the other projects' resources (which, by design, are sanitized generic messages). All Cinder deployments are affected.
CVSS v3.1
Score 4.3medium
Affected software
OpenStack
Cinder
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-09-18T19:06:27.001Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad852542cdf04f656ade6e0
Added to database: 10/21/2026, 05:49:08 UTC
Last updated: 10/21/2026, 05:49:08 UTC
Views: 1
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