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  4. CVE 2026 47839 federated oidc users can bypass
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Back to active CVEs
Critical · CVSS 9.2CVE-2026-47839

Federated OIDC Users Can Bypass externalGroupsWhitelist to Gain uaa.adminCVE-2026-47839

Answer in brief

CVE-2026-47839 records a Critical severity (CVSS 9.2) vulnerability in Federated OIDC Users Can Bypass externalGroupsWhitelist to Gain uaa.admin. The current sources do not mark it as known exploited. The current feed maps Cloud Foundry Foundation/cf-deployment (generic), Cloud Foundry Foundation/cf-deployment (generic), Cloud Foundry Foundation/UAA (generic), Cloud Foundry Foundation/UAA (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Sep 18, 2026Source checked Oct 26, 2026First seen by HOL Sep 11, 2026Material review Sep 18, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.2
Exploitation
Not marked as known exploited
Affected software
4 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 9.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Cloud Foundry Foundation/cf-deployment (generic), Cloud Foundry Foundation/cf-deployment (generic), Cloud Foundry Foundation/UAA (generic), Cloud Foundry Foundation/UAA (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Cloud Foundry Foundation/cf-deploymentgeneric0Not reported
Cloud Foundry Foundation/cf-deploymentgeneric>=0 <=48.9.0Not reported
Cloud Foundry Foundation/UAAgeneric0Not reported
Cloud Foundry Foundation/UAAgeneric>=0 <=77.30.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Cloud Foundry Foundation/cf-deployment, Cloud Foundry Foundation/cf-deployment, Cloud Foundry Foundation/UAA.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Sep 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 11, 2026

Sources and claim methodology

  • Source referencecloudfoundry.org
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Oray Pugongying X5 Pro PPPoE WAN Setting upload_files plugin_init unrestricted uploadAlso CWE-284

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-284
Source
CVE List V5
Source checked
Oct 26, 2026
References
1 linked source
Open source record