{"id":"CVE-2026-26190","state":"PUBLISHED","title":"Milvus Allows Unauthenticated Access to Restful API on Metrics Port (9091) Leads to Critical System Compromise","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.","publishedAt":"2026-02-13T18:44:33.465Z","updatedAt":"2026-02-26T14:44:20.414Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["milvus-io milvus"],"affected":[{"vendor":"milvus-io","product":"milvus","versions":[{"version":"< 2.5.27","status":"affected"},{"version":">= 2.6.0, < 2.6.10","status":"affected"}]}],"references":["https://github.com/milvus-io/milvus/security/advisories/GHSA-7ppg-37fh-vcr6","https://github.com/milvus-io/milvus/commit/92b74dd2e286006a83b4a5f07951027b32e718a9","https://github.com/milvus-io/milvus/releases/tag/v2.5.27","https://github.com/milvus-io/milvus/releases/tag/v2.6.10"],"weaknesses":["CWE-306"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/26xxx/CVE-2026-26190.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-26190","state":"PUBLISHED","datePublished":"2026-02-13T18:44:33.465Z","dateUpdated":"2026-02-26T14:44:20.414Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-02-11T19:56:24.812Z"},"containers":{"cna":{"title":"Milvus Allows Unauthenticated Access to Restful API on Metrics Port (9091) Leads to Critical System Compromise","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."}],"affected":[{"vendor":"milvus-io","product":"milvus","versions":[{"version":"< 2.5.27","status":"affected"},{"version":">= 2.6.0, < 2.6.10","status":"affected"}]}],"references":[{"url":"https://github.com/milvus-io/milvus/security/advisories/GHSA-7ppg-37fh-vcr6","name":"https://github.com/milvus-io/milvus/security/advisories/GHSA-7ppg-37fh-vcr6","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/milvus-io/milvus/commit/92b74dd2e286006a83b4a5f07951027b32e718a9","name":"https://github.com/milvus-io/milvus/commit/92b74dd2e286006a83b4a5f07951027b32e718a9","tags":["x_refsource_MISC"]},{"url":"https://github.com/milvus-io/milvus/releases/tag/v2.5.27","name":"https://github.com/milvus-io/milvus/releases/tag/v2.5.27","tags":["x_refsource_MISC"]},{"url":"https://github.com/milvus-io/milvus/releases/tag/v2.6.10","name":"https://github.com/milvus-io/milvus/releases/tag/v2.6.10","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","lang":"en","description":"CWE-306: Missing Authentication for Critical Function","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-02-13T18:44:33.465Z"},"source":{"advisory":"GHSA-7ppg-37fh-vcr6","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-26190","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-02-18T04:56:24.717605Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-26T14:44:20.414Z"}}]}}}