AWSMcpServiceActionsFullAccess

Last Modified

Mar 12, 2026

March 12, 2026 at 09:26 PM UTC

Version

v3

Total Versions

1

Created

Feb 12, 2026

Actions

1

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Risk

High

An unrestricted escalation path, identity administration, secret reads or the power to switch off security monitoring. Read from this policy document alone: trust policies, boundaries and SCPs in your account still decide what actually succeeds. How this is assessed

  • High

    Full access to every action, under a condition

    Allows every action, limited only by the condition aws:IsMcpServiceAction. Whether that is safe depends entirely on that limit.

    • AllowAllMCPServiceActions: Action "*" on *

    Use with caution: Keep it for administrator or break-glass roles protected by MFA. Never attach it to a workload, a CI pipeline or a vendor role.

  • Medium

    Flagged by AWS IAM Access Analyzer

    AWS's own policy validation raises 1 security warning: PASS_ROLE_WITH_STAR_IN_ACTION_AND_RESOURCE.

    • Using wildcards (*) in the action and the resource can be overly permissive because it allows iam:PassRole permissions on all resources. We recommend that you specify resource ARNs or add the iam:PassedToService condition key to your statement.

    Use with caution: Read AWS's finding and the documentation it links to.

IAM Access Analyzer (2)

  • Warning / CREATE_SLR_WITH_STAR_IN_ACTION_AND_RESOURCE

    Using wildcards (*) in the action and the resource can allow creation of unintended service-linked roles because it allows iam:CreateServiceLinkedRole permissions on all resources. We recommend that you specify resource ARNs instead. AWS docs

  • Security warning / PASS_ROLE_WITH_STAR_IN_ACTION_AND_RESOURCE

    Using wildcards (*) in the action and the resource can be overly permissive because it allows iam:PassRole permissions on all resources. We recommend that you specify resource ARNs or add the iam:PassedToService condition key to your statement. AWS docs

Policy Document

View on GitHub
{
  "PolicyVersion": {
    "Document": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Sid": "AllowAllMCPServiceActions",
          "Effect": "Allow",
          "Action": "*",
          "Resource": "*",
          "Condition": {
            "Bool": {
              "aws:IsMcpServiceAction": "true"
            }
          }
        }
      ]
    },
    "VersionId": "v3",
    "IsDefaultVersion": true,
    "CreateDate": "2026-02-12T17:57:26+00:00"
  }
}

Version History (4 recorded)

Raw history

AWSMcpServiceActionsFullAccess - Policy Version v3

No recorded action delta - this version predates the change index. View the raw diff.

Mar 12, 2026

8efd699

AWSMcpServiceActionsFullAccess - Policy Version v3

No recorded action delta - this version predates the change index. View the raw diff.

Feb 12, 2026

2978021

AWSMcpServiceActionsFullAccess - Policy Version v2

No recorded action delta - this version predates the change index. View the raw diff.

Feb 12, 2026

af2ee2b

AWSMcpServiceActionsFullAccess - Policy Version v1

No recorded action delta - this version predates the change index. View the raw diff.

Nov 24, 2025

e3a52d2