FKIE_CVE-2026-26190

Vulnerability from fkie_nvd - Published: 2026-02-13 19:17 - Updated: 2026-02-18 19:11
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Milvus is an open-source vector database built for generative AI applications. Prior to 2.5.27 and 2.6.10, Milvus exposes TCP port 9091 by default, which enables authentication bypasses. The /expr debug endpoint uses a weak, predictable default authentication token derived from etcd.rootPath (default: by-dev), enabling arbitrary expression evaluation. The full REST API (/api/v1/*) is registered on the metrics/management port without any authentication, allowing unauthenticated access to all business operations including data manipulation and credential management. This vulnerability is fixed in 2.5.27 and 2.6.10.
References
security-advisories@github.comhttps://github.com/milvus-io/milvus/commit/92b74dd2e286006a83b4a5f07951027b32e718a9Patch
security-advisories@github.comhttps://github.com/milvus-io/milvus/releases/tag/v2.5.27Product, Release Notes
security-advisories@github.comhttps://github.com/milvus-io/milvus/releases/tag/v2.6.10Product, Release Notes
security-advisories@github.comhttps://github.com/milvus-io/milvus/security/advisories/GHSA-7ppg-37fh-vcr6Exploit, Mitigation, Vendor Advisory
Impacted products
Vendor Product Version
milvus milvus *
milvus milvus *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:milvus:milvus:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "47F8F103-3983-4099-A154-D8F4A04A1EA5",
              "versionEndExcluding": "2.5.27",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:milvus:milvus:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "34DA261B-809B-41E7-A1AA-486B04758216",
              "versionEndExcluding": "2.6.10",
              "versionStartIncluding": "2.6.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
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      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Milvus is an open-source vector database built for generative AI applications. Prior to 2.5.27 and 2.6.10, Milvus exposes TCP port 9091 by default, which enables authentication bypasses. The /expr debug endpoint uses a weak, predictable default authentication token derived from etcd.rootPath (default: by-dev), enabling arbitrary expression evaluation. The full REST API (/api/v1/*) is registered on the metrics/management port without any authentication, allowing unauthenticated access to all business operations including data manipulation and credential management. This vulnerability is fixed in 2.5.27 and 2.6.10."
    }
  ],
  "id": "CVE-2026-26190",
  "lastModified": "2026-02-18T19:11:12.333",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-13T19:17:29.253",
  "references": [
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      "tags": [
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      "url": "https://github.com/milvus-io/milvus/commit/92b74dd2e286006a83b4a5f07951027b32e718a9"
    },
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    },
    {
      "source": "security-advisories@github.com",
      "tags": [
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      "url": "https://github.com/milvus-io/milvus/releases/tag/v2.6.10"
    },
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      "tags": [
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    }
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  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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