CVE-2026-26190

9.8 CRITICAL
Published: February 13, 2026 Modified: February 18, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/milvus-io/milvus/releases/tag/v2.5.27
Source: security-advisories@github.com
Product Release Notes
https://github.com/milvus-io/milvus/releases/tag/v2.6.10
Source: security-advisories@github.com
Product Release Notes
https://github.com/milvus-io/milvus/security/advisories/GHSA-7ppg-37fh-vcr6
Source: security-advisories@github.com
Exploit Mitigation Vendor Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
0.3%
57th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

milvus