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CVE-2026-41859: CWE-295: Improper Certificate Validation in Cloud Foundry Foundation BOSH

0
High
VulnerabilityCVE-2026-41859cvecve-2026-41859cwe-295
Published: 06/04/2026 (06/04/2026, 01:51:45 UTC)
Source: CVE Database V5
Vendor/Project: Cloud Foundry Foundation
Product: BOSH

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

CVSS v4.0

Score 7.1high

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
High
Vuln. Integrity
Low
Vuln. Availability
None
Subsq. Confidentiality
High
Subsq. Integrity
High
Subsq. Availability
High
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:H/SA:H

Affected software

GitHub Actionsmore threats →ai
cloudfoundry/bosh
pkg:github/cloudfoundry/bosh
Affected versions
<282.1.9

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 06/11/2026, 08:46:27 UTC

Technical Analysis

This vulnerability (CWE-295) in BOSH occurs due to improper certificate validation in the communication between nats-sync and the BOSH director. Specifically, the Net::HTTP client disables SSL certificate verification for director API calls, enabling a man-in-the-middle attacker to intercept and steal sensitive credentials such as Basic auth headers or UAA client secrets. Additionally, the attacker can manipulate the VM list written into the NATS authorization file. The vulnerability affects all BOSH versions prior to 282.1.9, with a fix introduced in version 282.1.9.

Potential Impact

An attacker positioned as a man-in-the-middle can steal administrative credentials for the BOSH director, granting them full administrative access. This compromises the integrity and confidentiality of the director and potentially the entire deployment managed by BOSH. The attacker can also tamper with the VM list used for authorization, potentially disrupting or manipulating VM operations.

Mitigation Recommendations

A fix is available in BOSH version 282.1.9 and later. Users should upgrade to version 282.1.9 or newer to resolve this vulnerability. Since no official remediation level or temporary fix is stated, upgrading to the fixed version is the recommended action. Patch status is confirmed by the version information in the description.

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Technical Details

Data Version
5.2
Assigner Short Name
vmware
Date Reserved
2026-04-22T06:22:10.082Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a20e3ffe29bf47b504cab9d

Added to database: 06/04/2026, 02:33:35 UTC

Last enriched: 06/11/2026, 08:46:27 UTC

Last updated: 07/31/2026, 19:22:58 UTC

Views: 98

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