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AWS AWSCloudFormation medium security documentation change

Service: AWSCloudFormation · 2026-01-13 · Security-related medium

File: AWSCloudFormation/latest/TemplateReference/aws-properties-ecs-capacityprovider-managedinstancesnetworkconfiguration.md

Summary

Changed 'SecurityGroupIds' property from optional to required

Security assessment

Making security groups mandatory enforces network security controls for ECS Managed Instances, reducing exposure risks. Concrete evidence: SecurityGroupIds are now required.

Diff

diff --git a/AWSCloudFormation/latest/TemplateReference/aws-properties-ecs-capacityprovider-managedinstancesnetworkconfiguration.md b/AWSCloudFormation/latest/TemplateReference/aws-properties-ecs-capacityprovider-managedinstancesnetworkconfiguration.md
index d7ed80e9c..b5db1d54b 100644
--- a//AWSCloudFormation/latest/TemplateReference/aws-properties-ecs-capacityprovider-managedinstancesnetworkconfiguration.md
+++ b//AWSCloudFormation/latest/TemplateReference/aws-properties-ecs-capacityprovider-managedinstancesnetworkconfiguration.md
@@ -40 +40 @@ The list of security group IDs to apply to Amazon ECS Managed Instances. These s
-_Required_ : No
+_Required_ : Yes