amazon aws CVE-2026-104002 in Amazon and Aws Products
Published on October 1, 2026

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

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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.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-104002 is exploitable with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.

Exploitation:
NONE
Automatable:
NO
Technical Impact:
PARTIAL
Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
NONE
Availability Impact:
NONE

Weakness Type

Detection of Error Condition Without Action

The software detects a specific error, but takes no actions to handle the error.


Products Associated with CVE-2026-104002

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Amazon Aws
Aws Powertools Lambda Python

Affected Versions

AWS powertools-lambda-python: