Description
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to perform tampering over a network.
Affected products
microsoft: asp.net core; microsoft: visual studio 2022; microsoft: visual studio 2026
References1
- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88092 PatchVendor Advisory
Metrics
- CVSS 3.1
-
9.4
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L - EPSS — exploit probability
- 1% percentile: 61 · as of 11 November 2026
- CWE
- CWE-444
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.