Description
The Nginx routing configuration for Cloud Controller blocks unauthenticated access to /internal/v4/ and /internal/v5/ endpoints but omits an equivalent deny rule for /internal/v3/. As a result, the staging callback endpoints /internal/v3/staging/:guid/droplet_completed and /internal/v3/staging/:guid/build_completed are reachable from the public API listener without OAuth or mutual TLS.



 



An attacker with a valid build or droplet GUID can submit a forged staging callback, transition a droplet to STAGED, and persist arbitrary process metadata and sidecar data with no associated package or actor. A SpaceAuditor can enumerate GUIDs without write permissions, making this an effective privilege escalation beyond the intended role boundary.
Published: 2026-10-30
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

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History

Fri, 30 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 30 Oct 2026 11:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Fri, 30 Oct 2026 09:00:00 +0000

Type Values Removed Values Added
Description The Nginx routing configuration for Cloud Controller blocks unauthenticated access to /internal/v4/ and /internal/v5/ endpoints but omits an equivalent deny rule for /internal/v3/. As a result, the staging callback endpoints /internal/v3/staging/:guid/droplet_completed and /internal/v3/staging/:guid/build_completed are reachable from the public API listener without OAuth or mutual TLS.   An attacker with a valid build or droplet GUID can submit a forged staging callback, transition a droplet to STAGED, and persist arbitrary process metadata and sidecar data with no associated package or actor. A SpaceAuditor can enumerate GUIDs without write permissions, making this an effective privilege escalation beyond the intended role boundary.
Title Broken access control restriction in Cloud Controller API
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: vmware

Published:

Updated: 2026-10-30T15:47:46.591Z

Reserved: 2026-07-04T18:15:19.504Z

Link: CVE-2026-59387

cve-icon Vulnrichment

Updated: 2026-10-30T15:43:40.859Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-30T09:17:14.913

Modified: 2026-10-30T17:44:35.820

Link: CVE-2026-59387

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-30T11:00:15Z

Weaknesses