{"id":"CVE-2026-26190","summary":"Milvus Allows Unauthenticated Access to Restful API on Metrics Port (9091) Leads to Critical System Compromise","details":"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.","aliases":["BIT-milvus-2026-26190","GHSA-7ppg-37fh-vcr6","GO-2026-4481"],"modified":"2026-05-18T05:58:39.329393724Z","published":"2026-02-13T18:44:33.465Z","related":["SUSE-SU-2026:0757-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26190.json","cwe_ids":["CWE-306"],"cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/milvus-io/milvus/releases/tag/v2.5.27"},{"type":"WEB","url":"https://github.com/milvus-io/milvus/releases/tag/v2.6.10"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26190.json"},{"type":"ADVISORY","url":"https://github.com/milvus-io/milvus/security/advisories/GHSA-7ppg-37fh-vcr6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26190"},{"type":"FIX","url":"https://github.com/milvus-io/milvus/commit/92b74dd2e286006a83b4a5f07951027b32e718a9"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/milvus-io/milvus","events":[{"introduced":"4def0255a928287f982f1d6b8c53ed32127bb84d"},{"fixed":"731588614bf3926ce9b73ae3970a68f65c5f25cc"}]}],"versions":["v2.6.9","pkg/v2.6.9","v2.6.8","pkg/v2.6.8","client/v2.6.2","v2.6.7","pkg/v2.6.7","v2.6.6","pkg/v2.6.6","v2.6.4","pkg/v2.6.4","client/v2.6.1","v2.6.3","pkg/v2.6.3","v2.6.2","pkg/v2.6.2","v2.6.1","pkg/v2.6.1","client/v2.6.0","v2.6.0","pkg/v2.6.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-26190.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}