CVE-2026-88092
criticalInconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to perform tampering over a ne…
Vendor / product: Microsoft — asp.net core
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to perform tampering over a network.
CVSS
9.4
9.4 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L Severity source: NVD CVSS v3.1 (secure@microsoft.com)
Timeline (UTC)
Published: 2026-10-13 19:21
Modified: 2026-10-16 15:47
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 07:00 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
microsoft / asp.net_core ≥8.0.0 <8.0.32, ≥9.0.0 <9.0.21, ≥10.0.0 <10.0.13, >11.0.0, 11.0
microsoft / visual_studio_2022 ≥17.14.0 <17.14.42
microsoft / visual_studio_2026 ≥18.10.0 <18.10.4
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88092
Patch / mitigation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88092
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88092 secure@microsoft.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:00 UTC · record ↗