CVE-2026-18941 (GCVE-0-2026-18941)
Vulnerability from cvelistv5
Published
2026-08-10 20:44
Modified
2026-08-11 18:38
CWE
  • CWE-306 - Missing Authentication for Critical Function
Summary
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.
References
https://access.redhat.com/errata/RHSA-2026:53261 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53262 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53263 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-18941 vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2511116 issue-tracking, x_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat OpenShift AI 2.25 Unaffected: 1786110051   < *
    cpe:/a:redhat:openshift_ai:2.25::el9
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   Red Hat Red Hat OpenShift AI 3.3 Unaffected: 1786110033   < *
    cpe:/a:redhat:openshift_ai:3.3::el9
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   Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1786107278   < *
    cpe:/a:redhat:openshift_ai:3.4::el9
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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   Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Show details on NVD website


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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.\"}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-306\", \"description\": \"Missing Authentication for Critical Function\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-08-11T18:38:57.746Z\"}, \"x_redhatCweChain\": \"CWE-306: Missing Authentication for Critical Function\"}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-18941\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-11T18:38:57.746Z\", \"dateReserved\": \"2026-08-05T13:24:03.497Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-08-10T20:44:42.322Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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