CVE-2026-85788: CWE-184 Incomplete list of disallowed inputs in AWS AWS Labs MySQL MCP Server
Affects AWS AWS Labs MySQL MCP ServerSource CVE Database V5
Not known to be exploited · CVSS 5.5 Medium · patch available : update AWS Labs MySQL MCP Server when convenient.
Data as of 10/24/2026, 22:16:05 UTC
- Exploitation
Not in CISA KEV, no exploitation reported
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NWhat to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| AWSAWS Labs MySQL MCP Server | Affected
| Fixed in– |
GitHubawslabs/mcppkg:github/awslabs/mcpOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
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.
Weaknesses
- CWE-184Incomplete List of Disallowed Inputs (opens in a new tab)
Base weaknessOWASP Top 10 A03:2021: Injection (opens in a new tab)
The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete.