CVE-2026-70188HighCVSS 9.1
ASP.NET Core Security Feature Bypass Vulnerability
🔗 CVE IDs covered (1)
📋 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 products6
- ASP.NET Core 10.0
- ASP.NET Core 11.0
- ASP.NET Core 8.0
- ASP.NET Core 9.0
- Microsoft Visual Studio 2022 version 17.14
- Microsoft Visual Studio 2026 version 18.10
✅ Remediation
KBRelease Notes (Security Update) — fixed build 18.10.4 KBRelease Notes (Security Update) — fixed build 17.14.42 KBRelease Notes (Security Update) — fixed build 11.0.0-rc.2 KB5130035 (Security Update) — fixed build 9.0.21 KB5130036 (Security Update) — fixed build 10.0.13 KB5130034 (Security Update) — fixed build 8.0.32
🔗 References (8)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70188
- patchhttps://dotnet.microsoft.com/download/dotnet/11.0
- patchhttps://dotnet.microsoft.com/download/dotnet/9.0
- referencehttps://support.microsoft.com/help/5130035
- patchhttps://dotnet.microsoft.com/download/dotnet/10.0
- referencehttps://support.microsoft.com/help/5130036
- patchhttps://dotnet.microsoft.com/download/dotnet/8.0
- referencehttps://support.microsoft.com/help/5130034