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  4. CVE 2026 18941 feast feast operator feast default authentication
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Back to active CVEs
High · CVSS 7.7CVE-2026-18941

Feast: feast-operator: feast: default authentication mode is no_auth — shared multi-tenant instances deployed without authenticationCVE-2026-18941

Answer in brief

CVE-2026-18941 records a High severity (CVSS 7.7) vulnerability in Feast: feast-operator: feast: default authentication mode is no_auth — shared multi-tenant instances deployed without authentication. The current sources do not mark it as known exploited. The current feed maps Red Hat/rhoai/odh-workbench-jupyter-pytorch-rocm-py312-rhel9 (generic), Red Hat/rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9 (generic), Red Hat/rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9 (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 Aug 10, 2026Updated Oct 19, 2026Source checked Nov 9, 2026First seen by HOL Aug 10, 2026Material review Oct 19, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.7
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.7. 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 Red Hat/rhoai/odh-workbench-jupyter-pytorch-rocm-py312-rhel9 (generic), Red Hat/rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9 (generic), Red Hat/rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/rhoai/odh-workbench-jupyter-pytorch-rocm-py312-rhel9generic*Not reported
Red Hat/rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9generic*Not reported
Red Hat/rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9generic*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/rhoai/odh-workbench-jupyter-pytorch-rocm-py312-rhel9, Red Hat/rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9, Red Hat/rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9.
  2. 2Review the reported fix. Source-reported workaround: To mitigate this vulnerability, configure Feast deployments to utilize Kubernetes RBAC authentication. Ensure that `FeatureStore` Custom Resources (CRs) explicitly define an authentication mechanism other than `no_auth`. For Feast SDK usage, avoid the `no_auth` setting in production environments unless `FEAST_INSECURE_NO_AUTH=1` is explicitly set, acknowledging the security implications. Applying these configuration changes will require a redeployment or restart of the affected Feast services.

Evidence timeline and material changes

  1. Published upstream

    Aug 10, 2026

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

  2. Source modified

    Oct 19, 2026

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

  3. First seen by HOL

    Aug 10, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source description

A flaw was found in Feast and feast-operator. The default configuration for both the Feast SDK and the feast-operator is "no_auth," meaning no security manager is installed. This default allows unauthenticated and unauthorized access to feature-server, registry-server, and offline-server endpoints. A remote attacker, by exploiting this missing authentication, could achieve remote code execution (RCE) by storing a malicious User-Defined Function (UDF) on the feature-server, trigger a denial of service (DoS) by forcing re-materialization of all tenant features, and gain unauthorized access to cross-tenant data.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Improper verification of downloaded upgradesAlso CWE-306
  • AIS PersonnelService client performs unauthenticated doctor-specific operationsAlso CWE-306

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-306
Source
CVE List V5
Source checked
Nov 9, 2026
References
6 linked sources
Open source record