CVE-2026-18941

Full vulnerability record from the local CVENow database.
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.
Severity
HIGH
CVSS score
7.7 (v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
[email protected]
Published
2026-08-10 21:17:20.777000
Last modified
2026-10-19 12:17:05.063000
View original CVE JSON
{
  "id": "CVE-2026-18941",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-10T21:17:20.777",
  "lastModified": "2026-10-19T12:17:05.063",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "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": [
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  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
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          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
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        "impactScore": 4.0
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            {
              "exploitation": "none"
            },
            {
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          "role": "CISA Coordinator",
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      "description": [
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  "references": [
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      "url": "https://access.redhat.com/errata/RHSA-2026:53261",
      "source": "[email protected]"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:53262",
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    {
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      "source": "[email protected]"
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    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511116",
      "source": "[email protected]"
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}