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E1011 on FindInMap with DefaultValue, when without Transform

Status: Open.

#4627 In aws-cloudformation/cfn-lint;

· EvanK opened on Aug 12, 2026

W3694 SNS Subscription Endpoint should match Protocol

Status: Open.

#4621 In aws-cloudformation/cfn-lint;

· ashu99883 opened on Aug 10, 2026

maxLength (and other non-function validators) silently skipped for any string containing dynamic-reference-shaped text

Status: Open.

#4603 In aws-cloudformation/cfn-lint;

· itadly-platform-agent opened on Aug 5, 2026

Pre-commit hook failure due to lack of network access

Status: Open.

#4579 In aws-cloudformation/cfn-lint;

· ConsoleCatzirl opened on Jul 14, 2026

E3012 false positive when Fn::If guards a String-typed parameter used in an integer context

Status: Open.

#4577 In aws-cloudformation/cfn-lint;

· hoganbr-amzn opened on Jul 10, 2026

Feature Request: AWS::Lambda::Function - If ZipFile is used for the Lambda Code, the Handler needs to start with index.*

Status: Open.

#4567 In aws-cloudformation/cfn-lint;

· r-heimann opened on Jul 5, 2026

AWS::Events::Rule - Verify Targets is not iam

Status: Open.

#4505 In aws-cloudformation/cfn-lint;

· r-heimann opened on May 12, 2026

Feature Request: Mouse-over tooltip for more Parameters/Properties and potential bug fix

Status: Open.

#4481 In aws-cloudformation/cfn-lint;

· r-heimann opened on Apr 25, 2026

Hard coded resource names

Status: Open.

#4351 In aws-cloudformation/cfn-lint;

· kaihendry opened on Jan 29, 2026

Cost-Related Misconfigurations Findings

Status: Open.

#4186 In aws-cloudformation/cfn-lint;

· allianeamt opened on Jul 8, 2025

GuardDuty Detector Disallow Features and Data Sources

Status: Open.

#4153 In aws-cloudformation/cfn-lint;

· BwL1289 opened on May 28, 2025

🔧 Feature Request: Baseline support to suppress existing violations

enhancementNew feature or requestNew feature or request

Status: Open.

#4144 In aws-cloudformation/cfn-lint;

· leinardi opened on May 15, 2025