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

CVE ID : CVE-2026-26190

Published : Feb. 13, 2026, 7:17 p.m. | 1 hour, 12 minutes ago

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.

Severity: 9.8 | CRITICAL

Visit the link for more details, such as CVSS details, affected products, timeline, and more…