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AWS Security BulletinsCVE-2026-104002

CVE-2026-104002: Fail-open error handling in the data masking utility in Powertools for AWS Lambda (Python)

Bulletin ID: 2026-123-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 10/01/2026 14:00 PM PDT Description: Powertools for AWS Lambda (Python) is a developer toolkit that implements serverless best practices and increases developer velocity. We identified CVE-2026-104002, a fail-open error handling issue within the data masking utility of Powertools for AWS Lambda (Python). This issue might allow actors to read sensitive field values that the application intended to mask. Impacted versions: >=3.6.0 AND

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CVE-2026-104002View CVSS, KEV, EPSS, and threat context
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