High [CVE-2026-18941] Feast: feast-operator: feast: default authentication mode is no_auth — shared multi-tenant instances deployed without authentication
This high-severity Red Hat Linux advisory covers CVE-2026-18941 affecting Red Hat OpenShift AI (RHOAI).
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Summary
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.
Affected product named by the advisory: Red Hat OpenShift AI (RHOAI).
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source
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