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GHSA-gg2p-37pv-v7fq

Feast vulnerable to arbitrary code execution via unsafe deserialization of dill-serialized UDFs

Source: GitHub Advisory Database (reviewed) Critical CVE-2026-18948

Packages

EcosystemPackageAffectedFixed in
PyPI feast < 0.67.0 0.67.0

Details

As written in the advisory (Markdown source, shown as plain text).

A flaw was found in Feast. The system improperly deserializes user-defined functions (UDFs) stored in its registry, which are serialized using the 'dill' library. This allows a remote attacker to store a malicious UDF, leading to unauthenticated arbitrary code execution on the feature server in default configurations. An authenticated attacker can also achieve arbitrary code execution on the registry server by bypassing authorization checks during deserialization. This vulnerability can result in cross-tenant data access and lateral movement within the system.

References

External links from the advisory. They lead to third-party sites.