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AI / ML CVE-2026-26190

CRITICAL
Missing Authentication for Critical Function (CWE-306)
2026-02-13 security-advisories@github.com GHSA-7ppg-37fh-vcr6
Authentication Bypass AI / ML Milvus Suse
9.8
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SUSE
CRITICAL
qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 22:02 vuln.today
PoC Detected
Feb 18, 2026 - 19:11 vuln.today
Public exploit code
Patch released
Feb 18, 2026 - 19:11 nvd
Patch available
CVE Published
Feb 13, 2026 - 19:17 nvd
CRITICAL 9.8

DescriptionGitHub Advisory

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.

AnalysisAI

Unauthenticated API access in Milvus vector database before 2.5.27/2.6.10. TCP port 9091 exposed by default without authentication. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Connect to TCP port 9091
Exploit
Access /expr endpoint with default token
Execution
Evaluate arbitrary expressions
Impact
Manipulate database data
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Vulnerability AssessmentAI

Exploitation Milvus versions prior to 2.5.27 and 2.6.10 with TCP port 9091 exposed and /expr debug endpoint enabled using default etcd.rootPath authentication token (by-dev). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 9.8. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Attacker connects to exposed Milvus port 9091, accesses or modifies vector embeddings used by AI applications.
Remediation Update Milvus. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all Milvus instances in your environment and verify which are running vulnerable versions (pre-2.5.27 or pre-2.6.10); implement immediate network-level blocking of port 9091 from untrusted sources. …

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Vendor StatusVendor

SUSE

Severity: Critical
Product Status
openSUSE Leap 15.6 Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP5 Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP6 Fixed
openSUSE Leap 15.5 Fixed

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CVE-2026-26190 vulnerability details – vuln.today
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