CVE-2026-18947 (GCVE-0-2026-18947)

Vulnerability from cvelistv5 – Published: 2026-08-10 20:44 – Updated: 2026-10-19 11:10
VLAI
Title
Feast: feast: authorization bypass in /materialize endpoints enables dos via unauthorized full re-materialization
Summary
A flaw was found in Feast. An authorization bypass vulnerability exists in the /materialize and /materialize-incremental endpoints. By sending a specially crafted request that omits the feature_views field, an attacker can bypass intended permission checks. This allows an unauthenticated remote attacker, or any authenticated user, to trigger a full re-materialization of all feature views. The consequence is a Denial of Service (DoS) due to data corruption and significant resource consumption across all tenants.
Severity
8.5 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 15:28 UTC
CWE
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1212 records in the last 180 days details
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:53261 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53263 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:84734 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-18947 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2511164 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat OpenShift AI 2.25 Unaffected: 1786110051 , < * (rpm)
    cpe:/a:redhat:openshift_ai:2.25::el9
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Red Hat Red Hat OpenShift AI 3.3 Unaffected: 1786110033 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.3::el9
Create a notification for this product.
Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1791863220 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
Create a notification for this product.
Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Date Public
2026-08-10 19:49
Show details on NVD website
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Workarounds

CNA · redhat
To mitigate this vulnerability, restrict network access to the Feast feature server to trusted clients only, using firewall rules or network policies. If the Feast feature server is configured with the default `no_auth` setting, enable Kubernetes/OIDC authentication to require user authentication for access. While enabling authentication will prevent unauthenticated exploitation, any authenticated user will still be able to trigger the denial of service due to the authorization bypass.

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