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Vulnerabilities CVE-2026-18948

CVE-2026-18948

Critical
Open
TLP:CLEAR

Feast: feast: unsafe dill deserialization of registry-stored udfs — rce on feature server and registry server

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Description

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.

Details

CVSS Score
9.9
EPSS Score
0.69%

49.4th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Confidence
90%
Published
Aug 10, 2026
Last Modified
Aug 11, 2026
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