Description
A fail-open error handling issue within the data masking utility of Powertools for AWS Lambda (Python) might allow actors to read sensitive field values that the application intended to mask. 



To remediate this issue, users should upgrade to version 3.35.0.
Published: 2026-10-01
Score: 6 Medium
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 02 Oct 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Aws
Aws powertools-lambda-python
Vendors & Products Aws
Aws powertools-lambda-python

Thu, 01 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Description A fail-open error handling issue within the data masking utility of Powertools for AWS Lambda (Python) might allow actors to read sensitive field values that the application intended to mask.  To remediate this issue, users should upgrade to version 3.35.0.
Title Fail-open error handling in the data masking utility in Powertools for AWS Lambda (Python)
Weaknesses CWE-390
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

Aws Powertools-lambda-python
cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-10-02T18:25:47.226Z

Reserved: 2026-10-01T16:20:44.923Z

Link: CVE-2026-104002

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-01T22:17:00.567

Modified: 2026-10-02T14:19:28.583

Link: CVE-2026-104002

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-02T14:47:13Z

Weaknesses
  • CWE-390

    Detection of Error Condition Without Action