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CVE-2026-41859

Quick assessment

Affected
Cloud Foundry Foundation BOSH
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是美国Cloud Foundry公司的一个云基础设施自动化平台。 Cloud Foundry BOSH所有版本及之前版本存在安全漏洞，该漏洞源于nats-sync与BOSH director之间中间人攻击，可能导致凭证窃取。

CVSS 7.8 · High EPSS 0.10% · P1

Affected Version Matrix 1

VendorProduct Version RangeStatus
Cloud Foundry Foundation BOSH < 282.1.9 affected
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I. Basic Information for CVE-2026-41859

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A network man-in-the-middle between nats-sync and the BOSH director can steal the director credentials (Basic auth header or UAA client secret) and can tamper with the VM list that is written into the NATS authorization file. Stolen credentials grant administrative director access. UsersSync#bosh_api_response_body builds a Net::HTTP client with verify_mode = OpenSSL::SSL::VERIFY_NONE for every director call (/info, /deployments, /deployments/<name>/vms). Affected versions: - BOSH: all versions prior to v282.1.9 (inclusive); fixed in v282.1.9 or later
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cloud Foundry BOSH 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cloud Foundry BOSH是美国Cloud Foundry公司的一个云基础设施自动化平台。 Cloud Foundry BOSH所有版本及之前版本存在安全漏洞，该漏洞源于nats-sync与BOSH director之间中间人攻击，可能导致凭证窃取。
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 0 ~ 282.1.9 -

II. Public POCs for CVE-2026-41859

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III. Intelligence Information for CVE-2026-41859

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Security Blog Posts for CVE-2026-41859 (1)

Same Patch Batch · Cloud Foundry Foundation · 2026-06-04 · 5 CVEs total

CVE-2026-41860 8.8 HIGH Cloud Foundry BOSH 安全漏洞
CVE-2026-41010 8.2 HIGH Cloud Foundry BOSH Director 安全漏洞
CVE-2026-41011 8.2 HIGH Cloud Foundry BOSH 安全漏洞
CVE-2026-41858 6.5 MEDIUM Cloud Foundry windows-utilities-release 安全漏洞

IV. Related Vulnerabilities

Same product: BOSH
Same vendor: Cloud Foundry Foundation
Same weakness: CWE-295

V. Comments for CVE-2026-41859

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