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CVE-2026-18948

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

Published: Aug 10, 2026Updated: Aug 27, 2026 Sources: CVE List NVDCWE-502
9.9CRITICAL
NVD MITRE
EPSS Score
0.7%
Top 46.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-502

Affected Products

Red Hat
commercial·US
Red Hat OpenShift AI 2.25SaaSSaaS Service
Cloud & SaaS / saas-application
Red Hat OpenShift AI 3.3MixedSaaS Service
Cloud & SaaS / container-orchestration
Red Hat OpenShift AI 3.4On-prem
Operating Systems / linux-distro
Red Hat OpenShift AI (RHOAI)SaaSSaaS Service
Cloud & SaaS

Exploitability

Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:53261
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:53262
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:53263
access.redhat.com
and 3 more references View all →

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