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CVE-2026-93856

4.3 medium SSVC exploitation: poc Awaiting Analysis
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 8

  1. StatusPublished → Awaiting AnalysisNVD modified 2026-10-22 17:16
  2. StatusReceived → PublishedNVD modified 2026-10-21 18:54
  3. StatusPublished → ReceivedNVD modified 2026-10-21 19:17
  4. StatusReceived → PublishedNVD modified 2026-10-21 06:16
  5. References+1 references (now 4)NVD modified 2026-10-21 07:17
  6. StatusPublished → ReceivedNVD modified 2026-10-21 07:17
  7. StatusReceived → PublishedNVD modified 2026-10-21 05:36
  8. First seenCVSS 4.3NVD modified 2026-10-21 06:16

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 5