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CVE-2026-85788— Incomplete list of disallowed inputs in awslabs mysql-mcp-server

Quick assessment

Affected
AWS AWS Labs MySQL 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 Open source MCP servers for AWS是美国Amazon公司的一款亚马逊云服务连接的模块集合。 Amazon Open source MCP servers for AWS 1.0.21及之前版本存在输入验证错误漏洞，该漏洞源于mutable SQL detector组件对禁止输入的清单不完整，可能允许上下文相关攻击者借助正则表达式引擎未视为空白的SQL内联注释绕过只读执行门禁，访问文件读取和文件写入的SQL接收点。

CVSS 5.5 · Medium EPSS 0.18% · P8

Possible ATT&CK Techniques 2 AI

T1069 · Permission Groups Discovery T1076

Affected Version Matrix 1

VendorProduct Version RangeStatus
AWS AWS Labs MySQL MCP Server ≤ 1.0.21 affected
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I. Basic Information for CVE-2026-85788

Vulnerability Information
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Vulnerability Title
Incomplete list of disallowed inputs in awslabs mysql-mcp-server
Source: CVE Program / CVE List V5
Vulnerability Description
Incomplete list of disallowed inputs in the mutable SQL detector component in Amazon awslabs mysql-mcp-server might allow context-dependent actors to bypass the read-only enforcement gate and reach file-read and file-write SQL sinks via SQL inline comments that the regex engine does not treat as whitespace. To remediate this issue, users should upgrade to version 1.0.23.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/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 Open source MCP servers for AWS 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Amazon Open source MCP servers for AWS是美国Amazon公司的一款亚马逊云服务连接的模块集合。 Amazon Open source MCP servers for AWS 1.0.21及之前版本存在输入验证错误漏洞，该漏洞源于mutable SQL detector组件对禁止输入的清单不完整，可能允许上下文相关攻击者借助正则表达式引擎未视为空白的SQL内联注释绕过只读执行门禁，访问文件读取和文件写入的SQL接收点。
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
AWS AWS Labs MySQL MCP Server 0 ~ 1.0.21 -

II. Public POCs for CVE-2026-85788

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III. Intelligence Information for CVE-2026-85788

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Vendor Advisories for CVE-2026-85788 (2)

IV. Related Vulnerabilities

Same vendor: AWS
Same weakness: CWE-184