CVE-2026-9680Network attack vector

Unauthenticated tool invocation via all-interface binding

Published Jul 28, 2026 · Updated Jul 28, 2026

Improper access control in Alibaba Cloud RDS OpenAPI MCP Server 1.8.0 through 3.1.2 allows remote attackers to invoke MCP tools. Affected releases set SERVER_HOST to 0.0.0.0 during startup and accept MCP requests without authenticating the client. Network reachability to the listening port is the only gate, and invoked credential-backed tools can disclose RDS information.

CVSS severity5.8
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Alibaba Cloud RDS OpenAPI MCP Server 1.8.0 through 3.1.2 allows remote attackers to invoke MCP tools. Affected releases set SERVER_HOST to 0.0.0.0 during startup and accept MCP requests without authenticating the client. Network reachability to the listening port is the only gate, and invoked credential-backed tools can disclose RDS information.

The record

CVE
CVE-2026-9680
Published
Jul 28, 2026
Updated
Jul 28, 2026
Vendor
Alibaba Cloud
Product
Alibaba Cloud RDS OpenAPI MCP Server
Classifications
CWE-1188, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.8.0 <=3.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Alibaba Cloud · Alibaba Cloud RDS OpenAPI MCP Serverversion=1.8.0 <=3.1.2

Published CVSS scores

5.8Alibaba, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1188Insecure Default Initialization of Resource
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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