Feast Authorization Bypass Leads to DoS

Publication date: 2026-08-10

Last updated on: 2026-08-10

Assigner: Red Hat, Inc.

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.

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Meta Information

Published

2026-08-10

Last Modified

2026-08-10

Generated

2026-08-11

AI Q&A

2026-08-11

EPSS Evaluated

N/A

NVD

CVE-2026-18947

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is an authorization bypass flaw in Feast. It allows attackers to bypass permission checks by sending a crafted request that omits the feature_views field. This enables unauthenticated remote attackers or authenticated users to trigger a full re-materialization of all feature views, causing a Denial of Service due to data corruption and high resource usage.

Impact Analysis

The impact includes service disruption due to Denial of Service, data corruption from re-materialization, and excessive resource consumption affecting all tenants. Attackers could exploit this to degrade system performance or crash services.

Mitigation Strategies

Immediately restrict access to the /materialize and /materialize-incremental endpoints in Feast. Ensure all requests include the feature_views field to enforce permission checks. Monitor network traffic for unusual requests omitting this field.

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