{"cve":"CVE-2026-26190","nvd":{"published":"2026-02-13T19:17:29.253","modified":"2026-06-17T10:25:54.857","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-306"],"references":["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","https://github.com/milvus-io/milvus/security/advisories/GHSA-7ppg-37fh-vcr6"],"products":["milvus:milvus"],"source":"nvd","synced_at":"2026-10-19T22:23:35.260773158+00:00"},"epss":{"cve":"CVE-2026-26190","score":0.39255,"percentile":0.98602,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-7ppg-37fh-vcr6","url":"https://osv.dev/vulnerability/GHSA-7ppg-37fh-vcr6","summary":"Milvus: Unauthenticated Access to Restful API on Metrics Port (9091) Leads to Critical System Compromise","modified":"2026-07-20T05:15:25.159619510Z","packages":[{"ecosystem":"Go","name":"github.com/milvus-io/milvus","purl":"pkg:golang/github.com/milvus-io/milvus","ranges":["<2.5.27"],"fixed":["2.5.27"]},{"ecosystem":"Go","name":"github.com/milvus-io/milvus","purl":"pkg:golang/github.com/milvus-io/milvus","ranges":[">=2.6.0 <2.6.10"],"fixed":["2.6.10"]}]},{"id":"GO-2026-4481","url":"https://osv.dev/vulnerability/GO-2026-4481","summary":"Milvus: Unauthenticated Access to Restful API on Metrics Port (9091) Leads to Critical System Compromise in github.com/milvus-io/milvus","modified":"2026-02-19T20:41:22.616563Z","packages":[{"ecosystem":"Go","name":"github.com/milvus-io/milvus","purl":"pkg:golang/github.com/milvus-io/milvus","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}