Critical
Security advisory
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to perform tampering over a network.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-88092
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:56 UTC · Revision 1
Source evidence
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to perform tampering over a network.
osv:CVE-2026-88092
Complete source record
{
"id": "967975bf900a2bb24bc38ff7e8feab45a238c842ab2cdafca36869827b6249ce",
"url": "https://osv.dev/vulnerability/CVE-2026-88092",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2026-88092",
"summary": "Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to perform tampering over a network.",
"evidence": "osv:CVE-2026-88092",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2026-88092",
"aliases": [
"BIT-aspnet-core-2026-88092",
"CVE-2026-88092",
"GHSA-rv87-ccxw-8ggf"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/dotnet/aspnetcore",
"type": "GIT",
"events": [
{
"introduced": "3f1acb59718cadf111a0a796681e3d3509bb3381"
},
{
"fixed": "7413d24330774263a78a4f3837ca53493518455a"
},
{
"introduced": "af22effae4069a5dfb9b0735859de48820104f5b"
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{
"fixed": "b4d87e3b9131a019bc3b51df99ff69ac79bef459"
},
{
"introduced": "7387de91234d3ef751fa50b3d1bfede4130213ff"
},
{
"fixed": "0ef4bbfa3291b306a21e5001cb0491277bdd35bc"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.0.32"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.0.0"
},
{
"fixed": "9.0.21"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "10.0.0"
},
{
"fixed": "10.0.13"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v8.0.31",
"v10.0.12",
"v8.0.30",
"v10.0.11",
"v8.0.29",
"v10.0.10",
"v8.0.28",
"v10.0.9",
"v8.0.27",
"v10.0.8",
"v8.0.26",
"v10.0.7",
"v10.0.6",
"v8.0.25",
"v10.0.5",
"v10.0.4",
"v8.0.24",
"v10.0.3",
"v8.0.23",
"v10.0.2",
"v10.0.1",
"v8.0.22",
"v10.0.0",
"v8.0.21",
"v8.0.20",
"v8.0.19",
"v8.0.18",
"v8.0.17",
"v8.0.16",
"v8.0.15",
"v8.0.14",
"v8.0.13",
"v8.0.12",
"v8.0.11",
"v8.0.10",
"v8.0.8",
"v8.0.7",
"v8.0.5",
"v8.0.4",
"v8.0.3",
"v8.0.2",
"v8.0.1",
"v8.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88092.json"
}
}
],
"modified": "2026-10-24T10:51:18.970218920Z",
"provider": "osv",
"references": [
"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88092"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*"
],
"vendor_product": "microsoft:visual_studio_2022",
"extracted_events": [
{
"range": [
{
"introduced": "17.14.0"
},
{
"fixed": "17.14.42"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*"
],
"vendor_product": "microsoft:visual_studio_2026",
"extracted_events": [
{
"range": [
{
"introduced": "18.10.0"
},
{
"fixed": "18.10.4"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:a:microsoft:asp.net_core:11.0:rc1:*:*:*:*:*:*"
],
"vendor_product": "microsoft:asp.net_core",
"extracted_events": [
{
"range": [
{
"introduced": "11.0-rc1"
},
{
"last_affected": "11.0-rc1"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2026-88092",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 442543,
"published_at": "2026-10-13T19:21:27.043+00:00"
}