Improper Validation of Syntactic Correctness of Input Affecting awssdk.core package, versions [4.0.0,4.0.3.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DOTNET-AWSSDKCORE-14908870
- published9 Jan 2026
- disclosed9 Jan 2026
- creditUnknown
Introduced: 9 Jan 2026
CVE-2026-22611 (opens in a new tab)How to fix?
Upgrade AWSSDK.Core to version 4.0.3.3 or higher.
Overview
Affected versions of this package are vulnerable to Improper Validation of Syntactic Correctness of Input in the region input field. An attacker can cause AWS API calls to be routed to unintended or non-existent hosts by supplying an invalid value.