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Vulnerability record · CVE-2026-18947 · published 10 August 2026

CVE-2026-18947: Missing authorization vulnerability

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.

8.5 CVSS 3.1 High EPSS 0.59% · top 53.8% CWE-862 · Missing authorization Awaiting Analysis
8.5CVSS 3.1 base score
0.59%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
19 Aug 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L

References

LinkTags
https://access.redhat.com/errata/RHSA-2026:53261
https://access.redhat.com/errata/RHSA-2026:53263
https://access.redhat.com/security/cve/CVE-2026-18947
https://bugzilla.redhat.com/show_bug.cgi?id=2511164

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Source: NIST National Vulnerability Database (record CVE-2026-18947), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.