CVE-2026-41009

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

CVSS v3 5.8 MEDIUM

5.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.6 / Impact : 4.7

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://www.cloudfoundry.org/blog/cve-2026-41009-local-blobstore-may-allow-arbitrary-reads-deletes/	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:cloud_foundry:bosh:*:*:*:*:*:*:*:*

History

08 Jun 2026, 17:26

Type	Values Removed	Values Added
First Time		Cloud Foundry Cloud Foundry bosh
CPE		cpe:2.3:a:cloud_foundry:bosh::::::::
References	~~() https://www.cloudfoundry.org/blog/cve-2026-41009-local-blobstore-may-allow-arbitrary-reads-deletes/ -~~	() https://www.cloudfoundry.org/blog/cve-2026-41009-local-blobstore-may-allow-arbitrary-reads-deletes/ - Mitigation, Vendor Advisory

27 May 2026, 08:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-27 08:16

Updated : 2026-06-17 10:46

NVD link : CVE-2026-41009

Mitre link : CVE-2026-41009

CVE.ORG link : CVE-2026-41009

JSON object : View

Products Affected

cloud_foundry

bosh

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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