CVE-2026-18948
Feast: feast: unsafe dill deserialization of registry-stored udfs — rce on feature server and registry server
- State
- Published
- Severity
- 9.9 Critical
- Published
- Aug 10, 2026
- Updated
- Sep 28, 2026
- Reserved
- Aug 5, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.9 Critical | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | redhat |
Weaknesses
- CWE-502 Deserialization of Untrusted Data
Affected Products
| Product | Versions |
|---|---|
Red Hat OpenShift AI 2.25Red Hat |
|
Red Hat OpenShift AI 3.3Red Hat |
|
Red Hat OpenShift AI 3.4Red Hat |
|
Red Hat OpenShift AI 3.4Red Hat |
|
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat |
References
- RHSA-2026:53261vendor-advisory
- RHSA-2026:53262vendor-advisory
- RHSA-2026:53263vendor-advisory
- RHSA-2026:60520vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-18948vdb-entry
- RHBZ#2511167issue-tracking
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