Is CVE-2026-18941 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-18941?

CVE-2026-18941 has a CVSS v3 severity of HIGH (7.7).

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CVE-2026-18941

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.