CVE-2026-41859

CVE-2026-41859 PUBLISHED

Assigner: vmware
Reserved: 22.04.2026 Published: 04.06.2026 Updated: 04.06.2026

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

Metrics

CVSS Vector: 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
CVSS Score: 7.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	Low	Integrity	High
Attack Requirements	Present	Availability	None	Availability	High
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 7.8

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Cloud Foundry Foundation
Product	BOSH
Versions	Default: unaffected affected from 0 to 282.1.9 (excl.)

Vendor

Cloud Foundry Foundation

Product

BOSH

Versions

Default: unaffected

affected from 0 to 282.1.9 (excl.)

References

Problem Types

CWE-295: Improper Certificate Validation CWE

Impacts

A network man-in-the-middle attacker can steal BOSH director Basic-auth credentials or UAA client secrets and tamper with the NATS authorization file, granting administrative director access (confidentiality impact: HIGH; integrity impact: HIGH; availability impact: HIGH).