CVE-2026-22611 (GCVE-0-2026-22611)

Vulnerability from cvelistv5 – Published: 2026-01-10 05:37 – Updated: 2026-01-12 14:39
VLAI
Title
AWS SDK for .NET V4 adopted defense in depth enhancement for region parameter value
Summary
AWS SDK for .NET works with Amazon Web Services to help build scalable solutions with Amazon S3, Amazon DynamoDB, Amazon Glacier, and more. From versions 4.0.0 to before 4.0.3.3, Customer applications could be configured to improperly route AWS API calls to non-existent or non-AWS hosts. This notification is related to the use of specific values for the region input field when calling AWS services. An actor with access to the environment in which the SDK is used could set the region input field to an invalid value. This issue has been patched in version 4.0.3.3.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-12 14:39 UTC
CWE
  • CWE-20 - Improper Input Validation
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
aws aws-sdk-net Affected: >= 4.0.0, < 4.0.3.3
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