← Back to CVEs

CVE-2026-26190

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/13/2026

Last Modified2/18/2026

Sourcenvd

Honeypot Sightings0

Affected Products

milvus:milvus

Weaknesses (CWE)

CWE-306

References

https://github.com/milvus-io/milvus/commit/92b74dd2e286006a83b4a5f07951027b32e718a9(security-advisories@github.com)

https://github.com/milvus-io/milvus/releases/tag/v2.5.27(security-advisories@github.com)

https://github.com/milvus-io/milvus/releases/tag/v2.6.10(security-advisories@github.com)

https://github.com/milvus-io/milvus/security/advisories/GHSA-7ppg-37fh-vcr6(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.