CVE-2026-47839: Cloud Foundry Foundation Cf-Deployment

Critical severity, CVSS 9.2. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability allows users authenticating through a federated OIDC provider to obtain the uaa.admin scope despite operators restricting that provider through externalGroupsWhitelist configuration. The issue occurs specifically when an OIDC identity provider uses groupMappingMode: AS_SCOPES with a wildcard externalGroupsWhitelist entry.

Affected products

• Cloud Foundry Foundation Cf-Deployment: up to and including 48.9.0
• Cloud Foundry Foundation Uaa: up to and including 77.30.0

Published 2026-09-11. Last modified 2026-09-18.