{"id":"CVE-2026-93854","published":"2026-09-18T19:17:25.440","lastModified":"2026-09-22T19:56:19.073","description":"In OpenStack Blazar before 17.0.1, the V2 lease API does not enforce object-level authorization on its update and delete operations (PUT /v2/leases/{lease_id} and DELETE /v2/leases/{lease_id}). The policy authorize() wrapper attempts to load the target lease to build the authorization target from its owner, but it looks up the lease under the keyword \"lease_id\" whereas the controller methods name the parameter \"id\" (and the wsme_pecan.wsexpose wrapper delivers it positionally). The lookup returns None, and thus authorization falls back to the requesting user's own project_id/user_id instead of the target lease owner. Any authenticated user who knows a lease ID can therefore modify or delete leases belonging to other users and projects, bypassing the intended ownership check.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-1025"],"vendors":[],"products":[],"references":[{"url":"https://launchpad.net/bugs/2162719","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}