CVE-2026-41009— Local Blobstore may allow arbitrary reads/deletes
Possible ATT&CK Techniques 1AI
T1083 · File and Directory DiscoveryAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Cloud Foundry Foundation | BOSH Director | < 282.1.12 | affected |
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I. Basic Information for CVE-2026-41009
Vulnerability Information
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Vulnerability Title
Local Blobstore may allow arbitrary reads/deletes
Source: NVD (National Vulnerability Database)
Vulnerability 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
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cloud Foundry BOSH Director 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cloud Foundry BOSH Director是美国Cloud Foundry公司的一个云基础设施部署与生命周期管理平台。 Cloud Foundry BOSH Director存在安全漏洞，该漏洞源于AgentClient在处理长请求时未对agent提供的字符串进行规范化处理，直接传递给blobstore操作，可能导致路径遍历攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cloud Foundry Foundation | BOSH Director | 0 ~ 282.1.12 | - |
II. Public POCs for CVE-2026-41009
| # | POC Description | Source Link | Shenlong Link |
|---|
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Security Blog Posts for CVE-2026-41009 (1)
IV. Related Vulnerabilities
Same weakness: CWE-22
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nanobot: Path traversal via unsanitized WhatsApp document fi - CVE-2026-54223
Remote Code Execution via arbitrary file read and write in U - CVE-2026-8811
Path traversal in PDF generation module
V. Comments for CVE-2026-41009
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