Issues

• [Bug report]: AWS::LanguageExtensions fails with "Error parsing the template" when the template uses Fn::GetStackOutput

  aws-cloudformation/cfn-language-discussion#170 · Filter by author LucasNapik98 opened on Oct 13, 2026

• JSON objects as template parameters

  aws-cloudformation/cfn-language-discussion#169 · Filter by author srgoni opened on May 27, 2026

• "Fn::GetStackOutput" throttles "DescribeStacks" API calls if used in high number

  aws-cloudformation/cfn-language-discussion#168 · Filter by author davejay99 opened on May 27, 2026

• Add AWS::DeploymentTimestamp pseudo parameter to improve monitoring

  aws-cloudformation/cfn-language-discussion#167 · Filter by author saurav-y opened on Jul 18, 2025

• [Bug report]: using Ref with a Fn::ForEach loop identifier as the first argument to Fn::Select results in a transform error

  aws-cloudformation/cfn-language-discussion#166 · Filter by author emeraldsanto opened on Jun 20, 2025

• fn::foreach to return array or alternative that provides the ability to construct dynamic array.

  aws-cloudformation/cfn-language-discussion#165 · Filter by author ashtonian opened on Apr 22, 2025

• Increase template parameter size

  aws-cloudformation/cfn-language-discussion#164 · Filter by author josb opened on Apr 9, 2025

• New Function Request to convert strings(From kebab or snake to pascal or camel and vice versa)

  aws-cloudformation/cfn-language-discussion#163 · Filter by author odxkamimoto opened on Mar 17, 2025

• Fn::ForEach Issue - Unable to reference resources with logical IDs generated using the &{} syntax

  aws-cloudformation/cfn-language-discussion#162 · Filter by author miguel-aws opened on Jan 6, 2025

• Fn::ForEach enhancement to create list parameters

  aws-cloudformation/cfn-language-discussion#161 · Filter by author kothapet opened on Nov 22, 2024
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• AWS::LanguageExtensions transform breaks with ContainerDependency blocks ECS

  aws-cloudformation/cfn-language-discussion#160 · Filter by author daghaian opened on Nov 15, 2024
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• AWS::LanguageExtensions transform seems to break conditions with Fn::Select

  aws-cloudformation/cfn-language-discussion#159 · Filter by author RhubarbSin opened on Jul 12, 2024
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• Add (language extension) functions that handles basic math operations

  aws-cloudformation/cfn-language-discussion#158 · Filter by author yvele opened on Jun 10, 2024
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• Security group egress rule is deleted when adding another egress rule.

  aws-cloudformation/cfn-language-discussion#157 · Filter by author Irame opened on Apr 15, 2024

• Transform AWS::LanguageExtensions failed with: Condition layout is incorrect -- But I'm not using Conditions anywhere in the template.

  aws-cloudformation/cfn-language-discussion#156 · Filter by author johncuyle opened on Mar 15, 2024
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• Unexpected behaviour creating AWS::ElasticLoadBalancingV2::ListenerRule using Fn::ForEach function

  aws-cloudformation/cfn-language-discussion#154 · Filter by author fjmnav-nudge opened on Jan 19, 2024

• Adding LanguageExtensions breaks Account Id comparisons

  aws-cloudformation/cfn-language-discussion#153 · Filter by author brianhenk opened on Jan 5, 2024

• ChangeSet creation failure with {{IntrinsicFunction:(stack_name)//Fn::ImportValue}} is not allowed.

  aws-cloudformation/cfn-language-discussion#152 · Filter by author mrlikl opened on Dec 29, 2023
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• Fn::Range intrinsic function that would return a list of Strings, based on integers that are passed to it

  aws-cloudformation/cfn-language-discussion#148 · Filter by author arthurboghossian opened on Nov 3, 2023
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• Transform AWS::LanguageExtensions failed with: Condition layout is incorrect. Rollback requested by user

  aws-cloudformation/cfn-language-discussion#147 · Filter by author Luchiap opened on Nov 1, 2023
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• Fn::ForEach stack updates does not trigger change

  aws-cloudformation/cfn-language-discussion#146 · Filter by author carlnordenfelt opened on Oct 11, 2023
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• Add Fn::Sequence Intrinsic Function to AWS CloudFormation for Dynamic Sequence Generation

  aws-cloudformation/cfn-language-discussion#144 · Filter by author ggiallo28 opened on Sep 5, 2023

• Fn::ToJsonString unrecognized in conditional array element of resource properties

  aws-cloudformation/cfn-language-discussion#143 · Filter by author bobobox opened on Aug 31, 2023
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• AWS::CloudFormation::Stack parameter type, and/or AWS::SSM::Parameter::Value<"arbitraryString">

  aws-cloudformation/cfn-language-discussion#141 · Filter by author vforvalerio87 opened on Aug 22, 2023

• Allow Fn::Sub to be used for OutputKey in Fn::ForEach

  aws-cloudformation/cfn-language-discussion#140 · Filter by author Minitour opened on Aug 20, 2023
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