CVE Catalog

CVE-2026-93856

MediumCVSS 4.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.31%

23th percentile - higher than 23% of all known CVEs

Summary

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 non-expired user messages for other projects included in the response, resulting in leakage of UUIDs of resources owned by other projects.

Risk Assessment

A low-privileged user can obtain UUIDs of resources from other projects, potentially facilitating further attacks and breaching project isolation.

Recommendation

Update OpenStack Cinder to a version containing the fix or restrict access to the Messages API for non-admin roles.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS