Improper Handling of Highly Compressed Data (Data Amplification) Affecting microsoft.aspnetcore.server.iisintegration package, versions [8.0.0,8.0.31)[9.0.0,9.0.20)[10.0.0,10.0.12)[11.0.0-preview.1,11.0.0-rc.1)
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-MICROSOFTASPNETCORESERVERIISINTEGRATION-19659886
- published10 Sept 2026
- disclosed9 Sept 2026
- creditUnknown
Introduced: 9 Sep 2026
NewCVE-2026-69304 (opens in a new tab)How to fix?
Upgrade Microsoft.AspNetCore.Server.IISIntegration to version 8.0.31, 9.0.20, 10.0.12, 11.0.0-rc.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Handling of Highly Compressed Data (Data Amplification) in the request decompression process. An attacker can cause excessive memory consumption by sending highly compressed requests, potentially leading to service disruption.