Critical 9.8Published Feb 13, 2026

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

Updated under an hour ago (Oct 28, 2026, 12:00 AM ET)

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It affects milvus-io milvus and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for milvus-io milvus

Exploited in the last 30 days

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: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-306
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Feb 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

milvus-io milvus milvus_io:milvus (from the name)	before 2.5.27; from 2.6.0, < 2.6.10	CNA record
milvus milvus milvus:milvus	before 2.5.27; from 2.6.0 before 2.6.10	NVD

References

References

https://github.com/milvus-io/milvus/security/advisories/GHSA-7ppg-37fh-vcr6	x-refsource-confirm, exploit, mitigation, vendor-advisory
https://github.com/milvus-io/milvus/commit/92b74dd2e286006a83b4a5f07951027b32e718a9	x-refsource-misc, patch
https://github.com/milvus-io/milvus/releases/tag/v2.5.27	x-refsource-misc, product, release-notes
https://github.com/milvus-io/milvus/releases/tag/v2.6.10	x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.