What’s Vulnerable › Vulnerabilities
CVE-2026-93852
- Severity: high (CVSS 7.1 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-18 · updated 2026-09-22
- Weakness: CWE-862
Description
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.
Affected products
- OpenStack Blazar: from 1.0.0 before 15.1.1; from 16.0.0 before 16.0.1; from 17.0.0 before 17.0.1 — fixed in 15.1.1, 16.0.1, 17.0.1
How to fix
Upgrade to a fixed version: OpenStack Blazar 15.1.1, 16.0.1, 17.0.1. Check the vendor advisory for mitigations.
References
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