CVE-2026-41009
Local Blobstore may allow arbitrary reads/deletes
- State
- Published
- Severity
- 4.3 Medium
- Published
- May 27, 2026
- Updated
- May 27, 2026
- Reserved
- Apr 16, 2026
Description
When the director sends a long-running request (e.g. compile_package), the agent's reply JSON is consumed by AgentClient. inject_compile_log (line 332-339) reads response['value']['result']['compile_log_id'] and format_exception (line 318-325) reads exception['blobstore_id']; both pass the agent-supplied string unmodified to download_and_delete_blob(blob_id) (line 344-349), which calls @resource_manager.get_resource(blob_id) and, in an ensure block, @resource_manager.delete_resource(blob_id). Api::ResourceManager forwards the id straight to blobstore.get(id) / blobstore.delete(id). When the director is configured with the local blobstore provider, Blobstore::LocalClient#object_file_path(oid) is File.join(@blobstore_path, oid) (local_client.rb:54-56) with no normalisation, so oid = "../../jobs/director/config/director.yml" resolves outside the blobstore root.
Affected versions: BOSH Director: All versions prior to v282.1.12
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.3 Medium | CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:L | vmware |
| 3.1 | 5.8 Medium | CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:L | vmware |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
BOSH DirectorCloud Foundry Foundation |
|
References
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