Is CVE-2026-119148 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-119148 being exploited in the wild.

How severe is CVE-2026-119148?

Medium severity, with a CVSS score of 6.5, published 30 October 2026.

Which products and versions are affected?

Aws-Nitro-Enclaves-Sdk-C before 0.4.6.

Is there a fix for CVE-2026-119148?

Yes: fixed in 0.4.6. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-119148 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-119148?

Check whether you run Aws-Nitro-Enclaves-Sdk-C at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-119148: AWS aws-nitro-enclaves-sdk-c input validation in KMS endpoint

CVE-2026-119148 · Severity: medium · CVSS 6.5 · Published 2026-10-30

AWS Nitro Enclaves SDK for C is a library that enables applications running inside secure AWS Nitro Enclaves to authenticate and communicate with AWS Key Management Service (KMS). An incomplete validation of the region string allows an attacker to craft a malicious region parameter that causes the enclave to connect to a forged KMS endpoint, potentially allowing injection of forged cryptographic responses and compromise of encryption keys.

Vendors: AWS.

Quick answers

Is CVE-2026-119148 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-119148 being exploited in the wild.
How severe is CVE-2026-119148?: Medium severity, with a CVSS score of 6.5, published 30 October 2026.
Which products and versions are affected?: Aws-Nitro-Enclaves-Sdk-C before 0.4.6.
Is there a fix for CVE-2026-119148?: Yes: fixed in 0.4.6. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-119148 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-119148?: Check whether you run Aws-Nitro-Enclaves-Sdk-C at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 0.4.6

Technical details

The vulnerability is an input validation flaw in the REST client library where the AWS KMS server endpoint hostname is constructed from a caller-supplied region string without proper sanitization. An attacker can supply a crafted region value to redirect KMS communications to an attacker-controlled server, enabling man-in-the-middle attacks and key material injection. The fix in v0.4.6 validates the region parameter before building the endpoint hostname.

Affected products

AWS aws-nitro-enclaves-sdk-c before 0.4.6

Timeline

2026-10-30: disclosed

References

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