What’s Vulnerable › Vulnerabilities
CVE-2026-47839: Federated OIDC Users Can Bypass externalGroupsWhitelist to Gain uaa.admin
- Severity: critical (CVSS 9.2 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-11 · updated 2026-09-18
- Weakness: CWE-284
Description
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: through 48.9.0
- Cloud Foundry Foundation UAA: through 77.30.0
References
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