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AWS AWSCloudFormation documentation change

Service: AWSCloudFormation · 2025-09-28 · Documentation low

File: AWSCloudFormation/latest/TemplateReference/aws-resource-lambda-function.md

Summary

Updated CodeSigningConfigArn pattern to include 'eusc-' region prefix

Security assessment

The pattern update expands valid code signing configuration ARNs for security-related code signing features, but does not address a specific security vulnerability.

Diff

diff --git a/AWSCloudFormation/latest/TemplateReference/aws-resource-lambda-function.md b/AWSCloudFormation/latest/TemplateReference/aws-resource-lambda-function.md
index 62ba84e04..ae017125c 100644
--- a//AWSCloudFormation/latest/TemplateReference/aws-resource-lambda-function.md
+++ b//AWSCloudFormation/latest/TemplateReference/aws-resource-lambda-function.md
@@ -158 +158 @@ _Required_ : No
- _Pattern_ : `arn:(aws[a-zA-Z-]*)?:lambda:[a-z]{2}((-gov)|(-iso([a-z]?)))?-[a-z]+-\d{1}:\d{12}:code-signing-config:csc-[a-z0-9]{17}`
+ _Pattern_ : `arn:(aws[a-zA-Z-]*)?:lambda:(eusc-)?[a-z]{2}((-gov)|(-iso([a-z]?)))?-[a-z]+-\d{1}:\d{12}:code-signing-config:csc-[a-z0-9]{17}`