CVE-2026-85788 in Aws and Amazon Products
Published on September 9, 2026
Incomplete list of disallowed inputs in awslabs mysql-mcp-server
Vulnerability Analysis
CVE-2026-85788 is exploitable with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
What is a Denylist / Deny List Vulnerability?
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, leading to resultant weaknesses. Developers often try to protect their products against malicious input by performing tests against inputs that are known to be bad, such as special characters that can invoke new commands. However, such lists often only account for the most well-known bad inputs. Attackers may be able to find other malicious inputs that were not expected by the developer, allowing them to bypass the intended protection mechanism.
CVE-2026-85788 has been classified to as a Denylist / Deny List vulnerability or weakness.
Products Associated with CVE-2026-85788
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Affected Versions
AWS Labs MySQL MCP Server:- Before and including 1.0.21 is affected.