Milvus Allows Unauthenticated Access to Restful API on Metrics Port (9091) Leads to Critical System Compromise_CVE-2026-26190

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-02-13T18:44:33.465Z",
    "modified": "2026-02-13T19:37:40.553Z",
    "type": "cve",
    "title": "Milvus Allows Unauthenticated Access to Restful API on Metrics Port (9091) Leads to Critical System Compromise",
    "source": "GitHub_M",
    "references": "https://github.com/milvus-io/milvus/security/advisories/GHSA-7ppg-37fh-vcr6\nhttps://github.com/milvus-io/milvus/commit/92b74dd2e286006a83b4a5f07951027b32e718a9\nhttps://github.com/milvus-io/milvus/releases/tag/v2.5.27\nhttps://github.com/milvus-io/milvus/releases/tag/v2.6.10",
    "id": "CVE-2026-26190",
    "bulletinFamily": "",
    "cwe": [
        "CWE-306"
    ],
    "cvelist": null,
    "sourceData": "milvus-io milvus < 2.5.27\nmilvus-io milvus >= 2.6.0, < 2.6.10",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "milvus",
    "version": "< 2.5.27",
    "vendor": "milvus-io",
    "ai_description": "Unauthenticated access to the REST API on the metrics port due to missing authentication, allowing data manipulation and credential management.",
    "ai_severity": "Critical",
    "ai_vendor": "Milvus-io",
    "ai_product": "Milvus",
    "ai_version": "< 2.5.27, >= 2.6.0 and < 2.6.10",
    "ai_score": 9.8
}