CVE-2026-88092
Analyzed
Analyzed - Analysis Complete
HTTP Request Smuggling in ASP.NET Core
Vulnerability report for CVE-2026-88092, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-13
Last updated on: 2026-10-16
Assigner: Microsoft Corporation
Description
Description
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to perform tampering over a network.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | asp.net_core | From 11.0.0 (exc) |
| microsoft | asp.net_core | 11.0 |
| microsoft | visual_studio_2022 | From 17.14.0 (inc) to 17.14.42 (exc) |
| microsoft | visual_studio_2026 | From 18.10.0 (inc) to 18.10.4 (exc) |
| microsoft | asp.net_core | From 10.0.0 (inc) to 10.0.13 (exc) |
| microsoft | asp.net_core | From 8.0.0 (inc) to 8.0.32 (exc) |
| microsoft | asp.net_core | From 9.0.0 (inc) to 9.0.21 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-444 | The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. |
