PT-2026-64006 · Aws · Aws Api Mcp Server

CVE-2026-16584 · Published 2026-07-23 · Updated 2026-07-23

NVD

CVSS v3.1

7.0

High

Base vector

AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Improper handling of an initialization failure in AWS API MCP Server from 0.2.13 through 1.3.46 might allow an actor to bypass the user-configured security policy and execute AWS API operations that the policy was set to deny or gate. When initialization of the security policy enforcement data fails at server startup, the policy check is skipped for the lifetime of the process. IAM permissions on the configured credentials remain in effect and are unaffected.

To remediate this issue, users should upgrade to version 1.3.47.

Fix

Weakness Enumeration

CWE-455

Related Identifiers

CVE-2026-16584

Affected Products

Aws Api Mcp Server

References · 4

• https://pypi.org/project/awslabs.aws-api-mcp-server/1.3.47 · Patch
• https://aws.amazon.com/security/security-bulletins/2026-063-aws · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-16584 · Security Note
• https://github.com/awslabs/mcp/security/advisories/GHSA-29w2-fq35-v728 · Note