Rewindex/CVEs/Amazon Web Services

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

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.

Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N · CWE-390

Tracked companies

Amazon Web Services

Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.

Status incidents that name it

No tracked status incident names this CVE.

Affected vendors and products

AWS: powertools-lambda-python

References

• CVE record on cve.org (opens in new tab)
• NVD entry (opens in new tab)
• aws.amazon.com/security/security-bulletins/2026-123-aws/ (opens in new tab)
• github.com/aws-powertools/powertools-lambda-python/releases/tag/v3.35.0 (opens in new tab)
• github.com/aws-powertools/powertools-lambda-python/security/advisories/GHSA-3vxg… (opens in new tab)

All CVEsMarkdownJSON

• CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
• This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
• Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
• EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)