Fail-open error handling in the data masking utility in Powertools for AWS Lambda (Python)
Published Oct 1, 2026
6.0
MEDIUMCVSS 4.0
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.
Affected products
-
- Version 3.6.0StatusaffectedConstraints<=3.34.0
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| AWS | Powertools-Lambda-Python | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
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
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
No EPSS score for this CVE.
References (3)
- https://aws.amazon.com/security/security-bulletins/2026-123-aws/ vendor-advisory
- https://github.com/aws-powertools/powertools-lambda-python/releases/tag/v3.35.0 patch
- https://github.com/aws-powertools/powertools-lambda-python/security/advisories/GHSA-3vxg-4xv2-jfh5 third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://aws.amazon.com/security/security-bulletins/2026-123-aws/ | vendor-advisory | |
| https://github.com/aws-powertools/powertools-lambda-python/releases/tag/v3.35.0 | patch | |
| https://github.com/aws-powertools/powertools-lambda-python/security/advisories/GHSA-3vxg-4xv2-jfh5 | third-party-advisory |
Change history (0)
No recorded changes yet.