CVE-2026-85788

Medium

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.

SeverityMedium

CVSS5.5

Exploit probability—

ProductAWS Labs MySQL MCP Server

PublishedSep 9, 2026

First seenSep 9, 2026

Weakness typeCWE-184CWE-184

How to fix

Patches

github.com/awslabs/mcp/releases?page=2#release-2026.07.20260702161703

Vendor advisories

aws.amazon.com/security/security-bulletins/2026-103-aws/

Affected products

Product	Affected versions	Fixed in
AWS AWS Labs MySQL MCP Server	v ≤ 1.0.21	—

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