AWS aws-api-mcp-server up to 1.3.46 permission

Summaryinfo

A vulnerability has been found in AWS aws-api-mcp-server up to 1.3.46 and classified as critical. Affected by this issue is some unknown functionality. This manipulation causes permission. This vulnerability is registered as CVE-2026-16584. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in AWS aws-api-mcp-server up to 1.3.46. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a permission vulnerability. The CWE definition for the vulnerability is CWE-275. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at pypi.org. This vulnerability is known as CVE-2026-16584 since 07/22/2026. The exploitation appears to be easy. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1222 according to MITRE ATT&CK.

Upgrading to version 1.3.47 eliminates this vulnerability.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• AWS

Name

• aws-api-mcp-server

Version

• 1.3.0
• 1.3.1
• 1.3.2
• 1.3.3
• 1.3.4
• 1.3.5
• 1.3.6
• 1.3.7
• 1.3.8
• 1.3.9
• 1.3.10
• 1.3.11
• 1.3.12
• 1.3.13
• 1.3.14
• 1.3.15
• 1.3.16
• 1.3.17
• 1.3.18
• 1.3.19
• 1.3.20
• 1.3.21
• 1.3.22
• 1.3.23
• 1.3.24
• 1.3.25
• 1.3.26
• 1.3.27
• 1.3.28
• 1.3.29
• 1.3.30
• 1.3.31
• 1.3.32
• 1.3.33
• 1.3.34
• 1.3.35
• 1.3.36
• 1.3.37
• 1.3.38
• 1.3.39
• 1.3.40
• 1.3.41
• 1.3.42
• 1.3.43
• 1.3.44
• 1.3.45
• 1.3.46

CPE 2.3info

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CPE 2.2info

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