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CVE-2026-85787— An incomplete list of disallowed inputs in the SQL validation component of Amazon awslabs postgres-mcp-server

Quick assessment

Affected
Amazon postgres-mcp-server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Amazon awslabs postgres-mcp-server是美国Amazon公司的一个基于模型上下文协议的PostgreSQL数据库访问服务器。 Amazon awslabs postgres-mcp-server 1.1.7之前版本存在安全漏洞，该漏洞源于SQL验证组件中不允许输入列表不完整，可能允许未经身份验证的攻击者将特制SQL放入已认证用户与MCP服务器交互时提交的内容中，从而修改只读范围以外的数据。

CVSS 6.5 · Medium EPSS 0.34% · P26

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Amazon postgres-mcp-server < 1.1.7 affected
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I. Basic Information for CVE-2026-85787

Vulnerability Information
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Vulnerability Title
An incomplete list of disallowed inputs in the SQL validation component of Amazon awslabs postgres-mcp-server
Source: CVE Program / CVE List V5
Vulnerability Description
An incomplete list of disallowed inputs in the SQL validation component in Amazon awslabs postgres-mcp-server before version 1.1.7 might allow an unauthenticated actor to modify data beyond the read-only scope by placing crafted SQL into the content that is submitted when an authenticated user interacts with the MCP server. To remediate this issue, users should upgrade to version 1.1.7 or above.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不完整的黑名单
Source: CVE Program / CVE List V5
Vulnerability Title
Amazon awslabs postgres-mcp-server 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Amazon awslabs postgres-mcp-server是美国Amazon公司的一个基于模型上下文协议的PostgreSQL数据库访问服务器。 Amazon awslabs postgres-mcp-server 1.1.7之前版本存在安全漏洞，该漏洞源于SQL验证组件中不允许输入列表不完整，可能允许未经身份验证的攻击者将特制SQL放入已认证用户与MCP服务器交互时提交的内容中，从而修改只读范围以外的数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Amazon postgres-mcp-server 0 ~ 1.1.7 -

II. Public POCs for CVE-2026-85787

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III. Intelligence Information for CVE-2026-85787

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Vendor Advisories for CVE-2026-85787 (1)

Vendor Pages for CVE-2026-85787 (1)

Same Patch Batch · Amazon · 2026-09-04 · 4 CVEs total

CVE-2026-85654 7.8 HIGH Code injection in the CDK generator in Amazon awslabs.dynamodb-mcp-server
CVE-2026-85656 7.8 HIGH OS command injection in Amazon log4j-cve-2021-44228-hotpatch
CVE-2026-85786 7.5 HIGH Incomplete fix for CVE-2026-75936 memory-amplification denial of service in Amazon ion-jav

IV. Related Vulnerabilities

Same vendor: Amazon
Same weakness: CWE-184

V. Comments for CVE-2026-85787

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