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CVE-2026-93852

Blazar · Vulnerability

CVSS 4.0 7.1 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-93852

Published

In OpenStack Blazar before 17.0.1, the V2 lease listing operation (GET /v2/leases) returns leases for every project without enforcing project scoping or an administrator-only policy. Any authenticated user with access to the Blazar REST API can enumerate leases belonging to other tenants, exposing lease IDs, reservation IDs, resource IDs, and reservation metadata. The exposed lease IDs also enable the object-level authorization bypass tracked in the companion request, allowing an attacker to then modify or delete the enumerated leases.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-93852

Published

Blazar

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "defaultStatus": "unaffected",
                    "product": "Blazar",
                    "repo": "https://opendev.org/openstack/blazar",
                    "vendor": "OpenStack",
                    "versions": [
                        {
                            "lessThan": "15.1.1",
                            "status": "affected",
                            "version": "1.0.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThan": "16.0.1",
                            "status": "affected",
                            "version": "16.0.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThan": "17.0.1",
                            "status": "affected",
                            "version": "17.0.0",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON