What is CVE-2026-22611?

CVE-2026-22611 is a low-severity vulnerability in Aws Aws-Sdk-Net, classified under Improper Input Validation. CVSS score: 3.7/10. Published 2026-01-10.

How severe is CVE-2026-22611?

Low severity. CVSS v3 base score is 3.7 out of 10.

Improper input validation in Aws Aws-Sdk-Net

CVE-2026-22611

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.002 (10.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Aws Aws-sdk-net — versions >= 4.0.0, < 4.0.3.3

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-22611?: CVE-2026-22611 is a low-severity vulnerability in Aws Aws-Sdk-Net, classified under Improper Input Validation. CVSS score: 3.7/10. Published 2026-01-10.
How severe is CVE-2026-22611?: Low severity. CVSS v3 base score is 3.7 out of 10.