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AWS AWSCloudFormation documentation change

Service: AWSCloudFormation · 2025-04-11 · Documentation low

File: AWSCloudFormation/latest/UserGuide/dynamic-references.md

Summary

Added clarification that dynamic references aren't supported in CloudFormation Init metadata and EC2 UserData

Security assessment

Documentation update about feature limitations rather than security-specific content

Diff

diff --git a/AWSCloudFormation/latest/UserGuide/dynamic-references.md b/AWSCloudFormation/latest/UserGuide/dynamic-references.md
index 336950f7a..9e5a0485e 100644
--- a//AWSCloudFormation/latest/UserGuide/dynamic-references.md
+++ b//AWSCloudFormation/latest/UserGuide/dynamic-references.md
@@ -34 +34,3 @@ To determine which resource properties comprise a resource type's primary identi
-  * You can't use dynamic references for secure values (like those stored in Parameter Store or Secrets Manager) in custom resources. 
+  * Dynamic references can't be used for secure values (like those stored in Parameter Store or Secrets Manager) in custom resources. 
+
+  * Dynamic references are also not supported in `AWS::CloudFormation::Init` metadata and Amazon EC2 `UserData` properties.