CVE-2026-93856

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Source
https://cve.org/CVERecord?id=CVE-2026-93856
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93856.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-93856
Downstream
Published
2026-10-21T05:36:39Z
Modified
2026-10-22T10:30:57Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

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.

Database specific 
{
    "cna_assigner":  "mitre",
    "cwe_ids":  [
        "CWE-669"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93856.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "introduced":  "9.0.0"
                        },
                        {
                            "fixed":  "26.3.1"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "StandardRange"
                }
            ]
        }
    ]
}
References

Affected packages

Git / opendev.org/openstack/cinder

Affected ranges

Type
GIT
Repo
https://opendev.org/openstack/cinder
Events
Introduced
c36f40684e140a1492b00dd4812e8dce17fb2ebf
Last Affected
e4a83e9391c7441bfcd6f551d905fd1f0bcb418a
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "27.0.0"
                },
                {
                    "last_affected":  "27.0.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "28.0.0"
                },
                {
                    "last_affected":  "28.0.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "29.0.0"
                },
                {
                    "last_affected":  "29.0.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        }
    ]
}

Affected versions

27.*
27.0.0
27.0.0.0rc1
28.*
28.0.0
28.0.0.0rc1
29.*
29.0.0
29.0.0.0rc1
29.0.0.0rc2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93856.json"