Is CVE-2026-26190 actively exploited?

Yes. KEV Intelligence has observed exploitation attempts targeting this CVE. Confidence is confirmed.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence sensors have observed 8 exploitation attempts, 3 unique attacker IPs, and 3 countries targeting CVE-2026-26190. First observed Jun 25, 2026; last observed Aug 12, 2026.

Which versions are affected?

CVE-2026-26190 affects milvus-io milvus. Reported affected versions include = 2.6.0, < 2.6.10.

How should organizations remediate it?

Prioritize immediate patching and validate internet-facing exposure. Monitor for matching exploitation attempts in your environment.

No. CVE-2026-26190 is not currently listed in CISA KEV.

Vulnerability report

Active exploitation observed Confirmed confidence Not in CISA KEV

CVE-2026-26190

Q: How should organizations remediate it?

Prioritize immediate patching and validate internet-facing exposure. Monitor for matching exploitation attempts in your environment.

Q: Is it in CISA KEV?

No. CVE-2026-26190 is not currently listed in CISA KEV.

milvus Authentication Bypass

milvus-io / milvus · affected before 2.5.27

View live feed Monitor via API

Severity: CVSS 9.8 · Critical
Confidence: Confirmed
Exploit status: Observed in sensors
EPSS: 36.9%
First observed: 25 Jun 2026
Last observed: 12 Aug 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-26190 is an unauthenticated vulnerability affecting milvus-io milvus. 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...

Is it exploited?

Yes. KEV Intelligence sensors observed exploitation attempts with confirmed confidence.

Who is affected?

milvus-io / milvus affected before 2.5.27.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

Milvus is an open-source vector database built for generative AI applications

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.

Vendor Product Affected Status

milvus-io milvus Before 2.5.27 Affected

milvus-io milvus >= 2.6.0, < 2.6.10 Affected

Published: 13 Feb 2026
Exploitation Reported: 25 Jun 2026
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-26190
https://github.com/milvus-io/milvus/security/advisories/GHSA-7ppg-37fh-vcr6 github.com · CVE Record https://github.com/milvus-io/milvus/security/advisories/GHSA-7ppg-37f...
https://github.com/milvus-io/milvus/commit/92b74dd2e286006a83b4a5f07951027b32e718a9 github.com · CVE Record https://github.com/milvus-io/milvus/commit/92b74dd2e286006a83b4a5f079...
https://github.com/milvus-io/milvus/releases/tag/v2.5.27 github.com · CVE Record https://github.com/milvus-io/milvus/releases/tag/v2.5.27
https://github.com/milvus-io/milvus/releases/tag/v2.6.10 github.com · CVE Record https://github.com/milvus-io/milvus/releases/tag/v2.6.10

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

KEV Intelligence

Recorded 25 Jun 2026

Independent exploitation attestation added to the KEV Intelligence record.

Active exploitation observed

KEV Intelligence sensor

First observed 25 Jun 2026

First-party sensor telemetry confirms matching exploitation attempts.

Proof of concept available

Nuclei Templates

Recorded 12 Jun 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

Learn about Pro API access

Source	Added
KEV Intelligence First	2026-08-13 10:20 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

First-party evidence of exploitation activity

Aggregate observations show the scale, recency, and distribution of activity without overstating sparse data.

Attempts observed

Unique attacker IPs

Attacker countries

JP · NL · US

Sensors observed

Exploitation attempts over the last 56 days

Daily events observed by KEV Intelligence sensors

Updated 18 Aug 2026

24 Jun 6 Jul 18 Jul 30 Jul 18 Aug

First observed 25 Jun 2026 · Last observed 12 Aug 2026

Pro adds sensor region and window summaries. Enterprise adds raw IPs, paths, User-Agents, and payloads.

Request telemetry access

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 4
User-Agents: 4

Raw values available in Pro and Enterprise.

Scanner coverage

Nuclei template detected 09 Jun 2026.

View Nuclei template

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

Learn about Pro API access

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner	Reference	Detected
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-26190.yaml	09 Jun 2026

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.8 Critical

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

EPSS

36.9%

Weaknesses

Missing Authentication for Critical Function CWE-306

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Milvus - Unauthenticated Metrics API Access

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

19 Jul 2026
Indicators of compromise added (4)

Indicators of compromise recorded
25 Jun 2026
Observed by KEV Intelligence sensors

Evidence-backed exploitation signal
12 Jun 2026
Public PoC available

Public proof-of-concept code published
09 Jun 2026
Nuclei template available

Scanner coverage available
13 Feb 2026
CVE published

Vulnerability disclosed publicly
11 Feb 2026
CVE ID reserved

Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

View Pro pricing Read API docs

Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-26190

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2026-26190",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.36912,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 8, "sensors": 4 }
}

Early warning alerts

Get alerts on high-impact exploitation

Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.