{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18941","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","state":"PUBLISHED","assignerShortName":"redhat","dateReserved":"2026-08-05T13:24:03.497Z","datePublished":"2026-08-10T20:44:42.322Z","dateUpdated":"2026-08-11T18:38:57.746Z"},"containers":{"cna":{"title":"Feast: feast-operator: feast: default authentication mode is no_auth — shared multi-tenant instances deployed without authentication","metrics":[{"other":{"content":{"value":"Important","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"format":"CVSS"}],"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Red Hat","product":"Red Hat OpenShift AI 2.25","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhoai/odh-feature-server-rhel9","defaultStatus":"affected","versions":[{"version":"1786110051","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift_ai:2.25::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI 3.3","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhoai/odh-feature-server-rhel9","defaultStatus":"affected","versions":[{"version":"1786110033","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift_ai:3.3::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI 3.4","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhoai/odh-feature-server-rhel9","defaultStatus":"affected","versions":[{"version":"1786107278","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift_ai:3.4::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-pipeline-runtime-datascience-cpu-py312-rhel9","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-pipeline-runtime-pytorch-llmcompressor-cuda-py312-rhel9","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-pipeline-runtime-pytorch-rocm-py312-rhel9","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-pipeline-runtime-tensorflow-cuda-py312-rhel9","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-pipeline-runtime-tensorflow-rocm-py312-rhel9","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-workbench-jupyter-datascience-cpu-py312-rhel9","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-workbench-jupyter-pytorch-cuda-py312-rhel9","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-workbench-jupyter-pytorch-llmcompressor-cuda-py312-rhel9","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-workbench-jupyter-pytorch-rocm-py312-rhel9","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_ai"]}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:53261","name":"RHSA-2026:53261","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:53262","name":"RHSA-2026:53262","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:53263","name":"RHSA-2026:53263","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-18941","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2511116","name":"RHBZ#2511116","tags":["issue-tracking","x_refsource_REDHAT"]}],"datePublic":"2026-08-10T18:51:18.348Z","problemTypes":[{"descriptions":[{"cweId":"CWE-306","description":"Missing Authentication for Critical Function","lang":"en","type":"CWE"}]}],"x_redhatCweChain":"CWE-306: Missing Authentication for Critical Function","workarounds":[{"lang":"en","value":"To mitigate this vulnerability, configure Feast deployments to utilize Kubernetes RBAC authentication. Ensure that `FeatureStore` Custom Resources (CRs) explicitly define an authentication mechanism other than `no_auth`. For Feast SDK usage, avoid the `no_auth` setting in production environments unless `FEAST_INSECURE_NO_AUTH=1` is explicitly set, acknowledging the security implications. Applying these configuration changes will require a redeployment or restart of the affected Feast services."}],"timeline":[{"lang":"en","time":"2026-08-04T17:11:26.646Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-08-10T18:51:18.348Z","value":"Made public."}],"providerMetadata":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2026-08-11T18:38:57.746Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-11T17:41:13.353798Z","id":"CVE-2026-18941","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-11T17:51:45.141Z"}}]}}