CVE-2026-119148highCWE-807

CVE-2026-119148: high-severity vulnerability in aws-nitro-enclaves-sdk-c

Unvalidated parent-supplied AWS Region in AWS aws-nitro-enclaves-sdk-c allows impersonation of the enclave's AWS KMS endpoint

Published 30 Oct 2026

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.2epss 0.2%

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

Affected products

AWS · aws-nitro-enclaves-sdk-c

References

https://aws.amazon.com/security/security-bulletins/2026-157-aws/https://github.com/aws/aws-nitro-enclaves-sdk-c/releases/tag/v0.4.6 https://github.com/aws/aws-nitro-enclaves-sdk-c/security/advisories/GHSA-f6f6-6f88-r57j