Bug 2568450 (CVE-2026-114149) - CVE-2026-114149 dotnet11.0: dotnet8.0: dotnet9.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability
Summary: CVE-2026-114149 dotnet11.0: dotnet8.0: dotnet9.0: dotnet10.0: ASP.NET Core De...
Keywords:
Status: NEW
Alias: CVE-2026-114149
Deadline: 2026-11-10
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-06 19:04 UTC by Charles Timko
Modified: 2026-11-10 19:13 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description Charles Timko 2026-11-06 19:04:24 UTC 
Multipart form processing can bypass the configured header-count limit and consume excessive resources.

CNA: microsoft
CNA impact: Denial of Service
CWE: CWE-400
Platforms: windows, linux, macos
Architectures: all
CVSS 3.1: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Affected products:
- ASP.NET Core Runtime (release 11.0): 11.0.0-preview.1.26104.118 - 11.0.0-rc.3.26522.148; fixed 11.0.0
- ASP.NET Core Runtime (release 8.0): 8.0.0 - 8.0.33; fixed 8.0.34
- ASP.NET Core Runtime (release 9.0): 9.0.0 - 9.0.22; fixed 9.0.23
- ASP.NET Core Runtime (release 10.0): 10.0.0 - 10.0.14; fixed 10.0.15

Affected packages:
- Microsoft.AspNetCore.WebUtilities (release 9.0): 9.0.0 - 9.0.22; fixed 9.0.23
- Microsoft.AspNetCore.WebUtilities (release 10.0): 10.0.0 - 10.0.14; fixed 10.0.15
- Microsoft.AspNetCore.WebUtilities (release 11.0): 11.0.0-preview.1.26104.118 - 11.0.0-rc.3.26522.148; fixed 11.0.0
- Microsoft.AspNetCore.WebUtilities (release 8.0): 8.0.0 - 8.0.33; fixed 8.0.34
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