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HIGH

CVE-2026-18941

CVSS v3

7.7

HIGH

EPSS Score

0.8 %

exploit probability, as of 2026-10-17

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2026-18941 Red Hat Product Security9 products fixed · 3 known affected

    feast: feast-operator: Feast: Default authentication mode is no_auth — shared multi-tenant instances deployed without authentication

    rhoai/odh-workbench-jupyter-pytorch-rocm-py312-rhel9 as a component of Red Hat OpenShift AI (RHOAI) · rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9 as a component of Red Hat OpenShift AI (RHOAI) · rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9 as a component of Red Hat OpenShift AI (RHOAI)

  • RHSA-2026:53263 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: RHOAI 3.3.6 - Red Hat OpenShift AI

  • RHSA-2026:53262 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: RHOAI 3.4.3 - Red Hat OpenShift AI

  • RHSA-2026:53261 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: RHOAI 2.25.10 - Red Hat OpenShift AI

Full record on NVD

Description

A flaw was found in Feast and feast-operator. The default configuration for both the Feast SDK and the feast-operator is "no_auth," meaning no security manager is installed. This default allows unauthenticated and unauthorized access to feature-server, registry-server, and offline-server endpoints. A remote attacker, by exploiting this missing authentication, could achieve remote code execution (RCE) by storing a malicious User-Defined Function (UDF) on the feature-server, trigger a denial of service (DoS) by forcing re-materialization of all tenant features, and gain unauthorized access to cross-tenant data.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Published
2026-08-10
Last Modified
2026-08-11

Frequently asked questions

What is CVE-2026-18941?

A flaw was found in Feast and feast-operator. The default configuration for both the Feast SDK and the feast-operator is "no_auth," meaning no security manager is installed. This default allows unauthenticated and unauthorized access to feature-server, registry-server, and offline-server endpoints. A remote attacker, by exploiting this missing authentication, could achieve remote code execution (RCE) by storing a malicious User-Defined Function (UDF) on the feature-server, trigger a denial of service (DoS) by forcing re-materialization of all tenant features, and gain unauthorized access to cross-tenant data.

Is CVE-2026-18941 actively exploited?

Active exploitation of CVE-2026-18941 has not been confirmed. Its EPSS score was 0.8% on 2026-10-17, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-18941?

CVE-2026-18941 has a CVSS v3 base score of 7.7 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

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