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CVE-2026-88092Suited to automated attack · CISA

ASP.NET Core Tampering Vulnerability

CVSS score

9.4

EPSS probability

—

Risk score

0.9

Published

9 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

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Impact on My Inventory

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Vulnerability description

DayBreach CVE AI Research

CVE-2026-88092 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to perform tampering over a network.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-88092 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1microsoftASP.NET Core 10.0 View
2microsoftASP.NET Core 11.0 View
3microsoftASP.NET Core 8.0 View
4microsoftASP.NET Core 9.0 View
5microsoftMicrosoft Visual Studio 2022 version 17.14 View
6microsoftMicrosoft Visual Studio 2026 version 18.10 View
7nugetMicrosoft.AspNetCore.App.Runtime.linux-arm View
8nugetMicrosoft.AspNetCore.App.Runtime.linux-arm64 View
9nugetMicrosoft.AspNetCore.App.Runtime.linux-musl-arm View
10nugetMicrosoft.AspNetCore.App.Runtime.linux-musl-arm64 View
11nugetMicrosoft.AspNetCore.App.Runtime.linux-musl-x64 View
12nugetMicrosoft.AspNetCore.App.Runtime.linux-x64 View
13nugetMicrosoft.AspNetCore.App.Runtime.osx-arm64 View
14nugetMicrosoft.AspNetCore.App.Runtime.osx-x64 View
15nugetMicrosoft.AspNetCore.App.Runtime.win-arm64 View
16nugetMicrosoft.AspNetCore.App.Runtime.win-x64 View
17nugetMicrosoft.AspNetCore.App.Runtime.win-x86 View
18nugetMicrosoft.AspNetCore.App.Runtime.linux-arm View
19nugetMicrosoft.AspNetCore.App.Runtime.linux-arm64 View
20nugetMicrosoft.AspNetCore.App.Runtime.linux-musl-arm View
21nugetMicrosoft.AspNetCore.App.Runtime.linux-musl-arm64 View
22nugetMicrosoft.AspNetCore.App.Runtime.linux-musl-x64 View
23nugetMicrosoft.AspNetCore.App.Runtime.linux-x64 View
24nugetMicrosoft.AspNetCore.App.Runtime.osx-arm64 View
25nugetMicrosoft.AspNetCore.App.Runtime.osx-x64 View
26nugetMicrosoft.AspNetCore.App.Runtime.win-arm64 View
27nugetMicrosoft.AspNetCore.App.Runtime.win-x64 View
28nugetMicrosoft.AspNetCore.App.Runtime.win-x86 View
29nugetMicrosoft.AspNetCore.App.Runtime.linux-arm View
30nugetMicrosoft.AspNetCore.App.Runtime.linux-arm64 View
31nugetMicrosoft.AspNetCore.App.Runtime.linux-musl-arm View
32nugetMicrosoft.AspNetCore.App.Runtime.linux-musl-arm64 View
33nugetMicrosoft.AspNetCore.App.Runtime.linux-musl-x64 View
34nugetMicrosoft.AspNetCore.App.Runtime.linux-x64 View
35nugetMicrosoft.AspNetCore.App.Runtime.osx-arm64 View
36nugetMicrosoft.AspNetCore.App.Runtime.osx-x64 View
37nugetMicrosoft.AspNetCore.App.Runtime.win-arm64 View
38nugetMicrosoft.AspNetCore.App.Runtime.win-x64 View
39nugetMicrosoft.AspNetCore.App.Runtime.win-x86 View
40nugetMicrosoft.AspNetCore.App.Runtime.linux-arm View
41nugetMicrosoft.AspNetCore.App.Runtime.linux-arm64 View
42nugetMicrosoft.AspNetCore.App.Runtime.linux-musl-arm View
43nugetMicrosoft.AspNetCore.App.Runtime.linux-musl-arm64 View
44nugetMicrosoft.AspNetCore.App.Runtime.linux-musl-x64 View
45nugetMicrosoft.AspNetCore.App.Runtime.linux-x64 View
46nugetMicrosoft.AspNetCore.App.Runtime.osx-arm64 View
47nugetMicrosoft.AspNetCore.App.Runtime.osx-x64 View
48nugetMicrosoft.AspNetCore.App.Runtime.win-arm64 View
49nugetMicrosoft.AspNetCore.App.Runtime.win-x64 View
50nugetMicrosoft.AspNetCore.App.Runtime.win-x86 View
Total affected vendors: 2|Products: 50

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
9.4CVSS V31CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:LNVD
9.4CVSS 3.x—Vector not publishedGitHub Advisory
9.4CVSS V3_1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:CCVE CNA
0.0CVSS 4.0—Vector not publishedGitHub Advisory

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

ASP.NET Core Tampering Vulnerability

Open source
reference

ASP.NET Core Tampering Vulnerability

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-88092 is associated with the following CWEs:

CWE-444: Common Weakness Enumeration Entry CWE-444

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-88092 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

ASP.NET Core Tampering Vulnerabilitypatchhttps://github.com/dotnet/aspnetcore/security/advisories/GHSA-rv87-ccxw-8ggfvendor-advisoryhttps://github.com/dotnet/announcements/issues/472vendor-advisoryhttps://github.com/advisories/GHSA-rv87-ccxw-8ggfvendor-advisory

CVSS Vector Radar Chart

9.4 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityLow

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)Low

Yama doğrulandı

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

M
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microsoft
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nuget

Weakness Type (CWE & CAPEC)

CWE-444

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