Critical severity9.1NVD Advisory· Published Oct 13, 2026· Updated Oct 13, 2026

CVE-2026-70188

Description

Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network.

Affected products

Microsoft/ASP.NET Corellm-fuzzy

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-fpq8-4vhr-rcxxghsaADVISORY
github.com/dotnet/announcements/issues/462ghsa
github.com/dotnet/aspnetcore/security/advisories/GHSA-fpq8-4vhr-rcxxghsa
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70188nvd

News mentions

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