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CVE-2026-41704— Compromised VM can make arbitrary blobstore deletes

Quick assessment

Affected
Cloud Foundry Foundation BOSH Director
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 v282.1.12之前版本存在安全漏洞，该漏洞源于AgentClient在处理NATS回复时未对blob_id进行UUID格式检查、所有权检查和命名空间前缀检查，直接传递给blobstore操作，可能导致未授权访问。

CVSS 5.0 · Medium EPSS 0.08% · P0

Affected Version Matrix 1

VendorProduct Version RangeStatus
Cloud Foundry Foundation BOSH Director < 282.1.12 affected
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I. Basic Information for CVE-2026-41704

Vulnerability Information
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Vulnerability Title
Compromised VM can make arbitrary blobstore deletes
Source: CVE Program / CVE List V5
Vulnerability Description
AgentClient#handle_method (lines 264-303) processes every NATS reply. It calls inject_compile_log (line 273) on every response, which reads response['value']['result']['compile_log_id'] (line 332-338) and passes it to download_and_delete_blob. Separately, any response containing 'exception' goes through format_exception (lines 308-325), which reads exception['blobstore_id'] and also calls download_and_delete_blob. That helper (lines 344-349) calls ResourceManager#get_resource(blob_id) and, in an ensure block, ResourceManager#delete_resource(blob_id). ResourceManager (resource_manager.rb:62-70) calls blobstore.delete(id) on the single shared Director blobstore with no UUID-format check, no ownership check, and no namespace prefix. Affected versions: BOSH Director: All versions prior to v282.1.12
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
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 v282.1.12之前版本存在安全漏洞，该漏洞源于AgentClient在处理NATS回复时未对blob_id进行UUID格式检查、所有权检查和命名空间前缀检查，直接传递给blobstore操作，可能导致未授权访问。
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-2026-41704

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III. Intelligence Information for CVE-2026-41704

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Security Blog Posts for CVE-2026-41704 (1)

IV. Related Vulnerabilities

Same product: BOSH Director
Same vendor: Cloud Foundry Foundation
Same weakness: CWE-284

V. Comments for CVE-2026-41704

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