CVE-2026-104002: Fail-open error handling in the data masking utility in Powertools for AWS Lambda (Python)
CVE-2026-104002 is a fail-open error handling vulnerability in the data masking utility of Powertools for AWS Lambda (Python). This flaw may allow unauthorized actors to read sensitive field values that were intended to be masked by the application. The affected versions range from 3.6.0 through 3.34.0 inclusive. AWS has published a security bulletin advising attention to this issue.
AI Analysis
Technical Summary
The vulnerability CVE-2026-104002 affects the data masking utility in Powertools for AWS Lambda (Python). Due to fail-open error handling, sensitive data that should be masked might be exposed to unauthorized parties. This issue impacts versions from 3.6.0 up to and including 3.34.0. The AWS Security Bulletin 2026-123-AWS provides further details and guidance.
Potential Impact
Sensitive data intended to be masked by the utility may be exposed, potentially leading to unauthorized disclosure of confidential information. This could affect applications relying on Powertools for AWS Lambda (Python) for data masking in the specified versions.
Mitigation Recommendations
Check the AWS Security Bulletin 2026-123-AWS for the latest remediation guidance and apply any official fixes or updates provided by AWS. Since the bulletin indicates this is an important issue requiring attention, upgrading to a fixed version beyond 3.34.0 or applying any recommended patches is advised. Patch status is not explicitly confirmed in the provided data; consult the vendor advisory for current remediation status.
CVE-2026-104002: Fail-open error handling in the data masking utility in Powertools for AWS Lambda (Python)
Description
CVE-2026-104002 is a fail-open error handling vulnerability in the data masking utility of Powertools for AWS Lambda (Python). This flaw may allow unauthorized actors to read sensitive field values that were intended to be masked by the application. The affected versions range from 3.6.0 through 3.34.0 inclusive. AWS has published a security bulletin advising attention to this issue.
Affected software
pkg:pypi/aws-lambda-powertoolsRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-104002 affects the data masking utility in Powertools for AWS Lambda (Python). Due to fail-open error handling, sensitive data that should be masked might be exposed to unauthorized parties. This issue impacts versions from 3.6.0 up to and including 3.34.0. The AWS Security Bulletin 2026-123-AWS provides further details and guidance.
Potential Impact
Sensitive data intended to be masked by the utility may be exposed, potentially leading to unauthorized disclosure of confidential information. This could affect applications relying on Powertools for AWS Lambda (Python) for data masking in the specified versions.
Mitigation Recommendations
Check the AWS Security Bulletin 2026-123-AWS for the latest remediation guidance and apply any official fixes or updates provided by AWS. Since the bulletin indicates this is an important issue requiring attention, upgrading to a fixed version beyond 3.34.0 or applying any recommended patches is advised. Patch status is not explicitly confirmed in the provided data; consult the vendor advisory for current remediation status.
Technical Details
- Classification
- {"confidence":0.83,"severitySource":"default","classifier":"rss-v2"}
- Article Source
- {"url":"https://aws.amazon.com/security/security-bulletins/rss/2026-123-aws/","fetched":true,"fetchedAt":"2026-10-01T21:29:27.116Z","wordCount":160}
Threat ID: 6abed0b7a43b0b3b8904aaf5
Added to database: 10/01/2026, 21:29:27 UTC
Last enriched: 10/01/2026, 21:29:31 UTC
Last updated: 10/02/2026, 03:48:49 UTC
Views: 11
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