aws-cdk-lib has Insertion of Sensitive Information into Log File vulnerability when using Cognito UserPoolClient Construct

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

No dated EPSS signal available.

As published by the source; long descriptions are shortened.

Summary The AWS Cloud Development Kit (CDK) is an open-source framework for defining cloud infrastructure using code. Customers use it to create their own applications which are converted to AWS CloudFormation templates during deployment to a customer’s AWS account. CDK contains pre-built components called "constructs" that are higher-level abstractions providing defaults and best practices. This approach enables developers to use familiar programming languages to define complex cloud infrastructure more efficiently than writing raw CloudFormation templates. The CDK Cognito UserPool construct deploys an AWS cognito user pool. An Amazon Cognito user pool is a user directory for web and mobile app authentication and authorization. Customers can deploy a client under this user pool through construct ‘UserPoolClient’ or through helper method 'addClient'. A user pool client resource represents an Amazon Cognito user pool client which is a configuration within a user pool that interacts…

Published by the source

31 Mar 2025, 22:37 UTC

Last modified by the source

31 Mar 2025, 22:37 UTC

Source last checked

26 Oct 2026, 12:36 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-qq4x-c6h6-rfxh

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-qq4x-c6h6-rfxh

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# Patch Next advisory brief: GHSA-qq4x-c6h6-rfxh

Advisory: aws-cdk-lib has Insertion of Sensitive Information into Log File vulnerability when using Cognito UserPoolClient Construct
IDs: GHSA-qq4x-c6h6-rfxh
Record: https://patchnext.com/advisories/ghsa-qq4x-c6h6-rfxh (revision 2, source checked 26 Oct 2026, 12:36 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: aws-cdk-lib 2.187.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm aws-cdk-lib: affected >= 2.37.0, < 2.187.0; fixed in 2.187.0

## Suggested inspection (read-only)
- `npm ls aws-cdk-lib --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on aws-cdk-lib.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-qq4x-c6h6-rfxh (OSV record GHSA-qq4x-c6h6-rfxh lists affected ranges: npm aws-cdk-lib >=2.37.0 <2.187.0 (fixed))
- Verified: https://github.com/advisories/GHSA-qq4x-c6h6-rfxh (GitHub-reviewed advisory GHSA-qq4x-c6h6-rfxh lists affected ranges: npm aws-cdk-lib >=2.37.0 <2.187.0)

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