---
id: CVE-2026-119148
title: >-
  Unvalidated parent-supplied AWS Region in AWS aws-nitro-enclaves-sdk-c allows
  impersonation of the enclave's AWS KMS endpoint
summary: >-
  Incomplete string validation in AWS aws-nitro-enclaves-sdk-c before 0.4.6 may
  allow a third party to impersonate the AWS KMS endpoint.




  To remediate this issue, users should rebuild any custom enclave image against
  aws-nitro-enclaves-s…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-807
vendor: AWS
product: aws-nitro-enclaves-sdk-c
affected:
  - aws-nitro-enclaves-sdk-c < 0.4.6
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-30T17:36:54.470225Z'
published: '2026-10-30'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T18:08:59.904Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-119148'
references:
  - url: 'https://github.com/aws/aws-nitro-enclaves-sdk-c/releases/tag/v0.4.6'
  - url: 'https://aws.amazon.com/security/security-bulletins/2026-157-aws/'
  - url: >-
      https://github.com/aws/aws-nitro-enclaves-sdk-c/security/advisories/GHSA-f6f6-6f88-r57j
tags:
  - cve.org
epss: 0.00174
epssPercentile: 0.06886
ingestedAt: '2026-11-05T16:24:31.314Z'
---

## Overview

Incomplete string validation in AWS aws-nitro-enclaves-sdk-c before 0.4.6 may allow a third party to impersonate the AWS KMS endpoint.



To remediate this issue, users should rebuild any custom enclave image against aws-nitro-enclaves-sdk-c 0.4.6.

## Affected

- `aws-nitro-enclaves-sdk-c < 0.4.6`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.