CVE-2026-18948 - Feast: feast: unsafe dill deserialization of registry-stored udfs — rce on feature server and registry server
CVE ID :CVE-2026-18948
Published : Aug. 10, 2026, 8:44 p.m. | 43 minutes ago
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.
Severity: 9.9 | CRITICAL
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Published : Aug. 10, 2026, 8:44 p.m. | 43 minutes ago
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.
Severity: 9.9 | CRITICAL
Visit the link for more details, such as CVSS details, affected products, timeline, and more...